I thought it was other predators that had come previously that had done that, but I've no actual evidence for that now that I think of it.
By the dialogue, it's pretty much confirmed that it's the same yautja. Anna calls it the "El Diablo que hace trofeos de los hombres" ("The demon who makes trophies of men"), and it's established that it's been operating in the jungle for awhile. While hypothetically, it could be different yautja each season, even by the film in of itself, the implication is that it's the same beastie. It would lose a lot of intimidation factor if it was just one rando out of lots of randos doing jungle hunting trips.
What if you watch the first and the second and then decide not to watch later films? Ok, still a bit headcanony, but I tend to think that's the best way of doing it, just end viewing before things fall apart.
The thing about Terminator is that it really is a case of a franchise where you not only get to pick and choose what you want to treat as canon, but where the IP itself supports this due to the nature of time travel.
Practically every piece of Terminator media operates as a given that T1 and T2 happen - there's some material that was published between the two films (and it's kinda interesting to see how certain elements were imagined before T2 solidified them), but as a rule, these are the base points. After that, you can go in any direction you wish after T2. End it there? Go for it. Factor in the deleted ending? Go for it. Want to watch a movie after it? Battle Across Time, T3, or Dark Fate. Want a TV show? Sarah Connor Chronicles. Novels? The Infiltrator trilogy and John Connor Chronicles. Comics? Too many to count. While T3 irks me because of how it undercuts T2, it's simply one of countless spinoff points. There's a reason why I generally mix and match timeline elements for Terminator in writing, because by definition, any apparent discrepency can be attributed to timeline shannigans. Heck, my TV Tropes mention actually gives credit to me as having "a great knack for mixing timelines" (aw, shucks).
So, yeah, to me, T3 is canon, because literally everything in the Terminator is canon in the sense that everything takes place in some timeline or another, and is therefore valid. T1 and T2 happen, in the best! (trademark) timeline, the deleted ending to T2 occurs and nothing else, but there's other timelines that exist as well.
When Kenobi (sorry, yeah, it was Kenobi, not Yoda, Yoda's line did fit better) is written to say that Anakin was already a great pilot when they met, he (Kenobi, the author of Kenobi's line) has absolutely no idea that he will later be written as having met a toddler who was a great soapbox racer and would then destroy an army by randomly mashing buttons in a spaceship and going oops.
While a goof, it can work - Anakin is the only human able to podrace, so while it's a stretch (since Obi-Wan doesn't watch the race), it technically works.
And when Ridley Scott's team designed the Alien cycle, its egg was produced by capturing creatures (the Nostromo's crew) and cocooning into transformation : at that point, the Alien had no bossfighty hive queen origin. It was a different universe than the one that gets defined in the sequel.
First, that was only in a deleted scene, so its validity is iffy. Second, it very much is the same universe, there's absolutely no disputing that. Third, to borrow a phrase, "absence of evidence is not evidence of absence." That there's no queen in Alien isn't a mark against Aliens for introducing her.
A movie is not responsible for its sequels, it does not include them, it is not rewritten by them. That is not how history works, and that is not how time works. For real.
You've switched from "universe" to "history," and I'm still left wondering what the issue is.
If we're looking at this from a Watsonian perspective (as most would), again, there's no discrepency. The only basis for a discrepency is a deleted scene. Aliens introduced the queen, practically every piece of Aliens media acknowledges the queen caste, including Alien 3 and Resurrection. Isolation is a notable exception, and in so doing, Isolation's take on things is made all the iffier. I get that Isolation is harkening back to Alien and Alien alone, but a lot of the elements of Isolation really don't fit with the wider Aliens universe.
If you're looking at this from a Doylist perspective, well, sure, Alien was made as a stand-alone film, and there's nothing in said film to suggest the existence of a queen caste. I can watch Alien in isolation (no, that isn't a pun), evaluate it as a piece of sci-fi horror media, and so on. But that's completely academic to what Aliens does. There's nothing in Alien from a storytelling standpoint that's dependent on a queen or the lack of one. It's...I'm sorry, this isn't an EU thing, I just don't get why you're so hung up on elements introduced in Aliens that don't really contradict anything in the first film. There's no shortage of discrepencies in the Aliens canon (even the films aren't that consistent), but this isn't one of them.
Geeks love their "canon" because they love treating fiction like history (an easy version of history, with most knowledge at hand and with purely esthetic judgement on speculation), so they love treating it as a whole, cohesive, meaningful, well-bridged.
That's true of most people.
People aren't stupid. People notice discrepencies, and appreciate storylines that are consistent. There's any number of reasons why issues might arise in storytelling, but it's the writer's job to minimize them.
They don't like out-universe explanations that don't get smoothed out by in-universe explanations, they don't like logical discontinuities. But these fictions are random arbitrary products of real life (circumstances, constraints, accidents), and they are made of random, capricious, out-universe decisions.
In some cases, yes, in some cases, no. For instance, Prometheus really throws a wringer in Aliens lore, but none of the decisions made in the film were random.
It's a deeper, less "playful" and more "real" reality, that has a better explanation power on a works' contents, and this is a better basis of judgement on that work.
Well that really depends on how you're evaluating the work, isn't it?
I'm quite capable of looking at Alien as the story of the destruction of the USCSS Nostromo, destroyed in 2122, as a catalyst for the stories of Ellen and Amanda Ripley, and I'm also capable of looking at it as a masterpiece of sci-fi horror that's had immense influence in the genre to this day. I'd have thought my review of Prey was an example of it when I mentioned the potential retcons the film introduces. Even if those are retcons (and boo! if they are), it doesn't detract from the film's quality as a film.
It seems that the difference is that you're only interested in looking at films in one way, from a Doylist lens. I've made no secret that I'm more of a Watsonian, but I'm quite capable of looking at films in their own right.
When a franchise's unit is produced, the previous ones exists and are part of the story, and that unit's authors can be blamed for whatever doesn't gel well. They inherit the previous episode and must deal with that, as part of the story.
All true.
But : the following units aren't part of the story. The author is not responsible for these, they do not factor in the writing, which meaning is only defined by what exists at the time. And if, five episode later, another author adds "and then they woke up and it was all a dream", nope, that former unit was not written as a dream, was not meant to be interpreted as such. It's a standalone (pure standalone if it's a first, standalone-with-its-predecessors if not).
Except that's completely false.
By your example, if there's a TV show of, say, ten episodes, and Writer A writes the first five, and Writer B writes the next five, it's a very specious claim to say that the two halves are completely different stories. Episodes aren't stand-alone in serialized television. Discrepencies may arise between different writers, but these are discrepencies, they're not the basis for saying episodes/seasons are part of different stories altogether.
Again, movies are best experienced in historical context and with their author's meaning in mind. "Canon" rewriting is historically imaginary, and it erases what the movie was.
You seem intent on insisting there's a conflict when there isn't one.
Yes, technically "canon" (as you describe it) can override a movie's context. An Alien movie could come out tomorrow and say that everything after Alien is just Ripley dreaming in cryo-sleep. That would affect canon, it wouldn't affect the worth/lack of it of Aliens, Alien 3, and Resurrection as films. On that, I agree, it's quite possible (and in many cases, desirable) to look at films on their own terms.
Except canon
hasn't rewritten Alien. Nowhere. Yes, canon has used Alien as a basis, canon has retroactively added to Alien (e.g. Isolation establishes that Ripley left a message for Amanda in addition to her final report as seen in the film, while Amanda didn't conceptually exist until its sequel), but none of this has overridden Alien. It seems like your entire hangup is that Alien isn't a stand-alone film, that the mere existence of Aliens and everything else is egregious by its mere existence.
Technically, each sequel makes a new, different, longer, separate story, that starts a lot like the previous one.
Okay, and?
There are many Alien stories, from the movies. One goes "Alien", The End. Another goes "Alien", "Aliens", The End. A third one goes "Alien", "Aliens", "Alien3", The End. Etc.
And?
Usually, these very separate stories are experienced by watching the last movie while "remembering" (with the imposed deviations/updates/corrections) the previous ones.
And?
Sorry, I don't know what your point is. Alien 1-4 each end definitively. That's true. What's your point? That's true of a lot of films. A definitive ending in one film is in no way a mark against a story being continued. Heck, The Hobbit ends definitively for instance, it didn't stop Lord of the Rings being written.
(And of course one may opt to watch/rewatch an earlier movie from the perspective of a later one, with the fitting interpretations... but that is still "missing", deliberately or accidentally, the movie that the authors did, meant, intended. Which I'd consider, let's say, a more "nerd" than "cinephile" approach.)
Okay, sure. If you want to frame it as a "nerd vs. cinephile" paradigm, then yes, those may have different viewing experiences. Your perception of the OT and PT of Star Wars will shift in accordance with which trilogy you view first. It's part of why I'd recommend a newcomer to start with the OT and then the PT as a first time round, but in subsequent rewatches to view them chronologically.
But since this has mainly focused on Alien and Aliens, I'm not sure what elements of Aliens retroactively change Alien. I can understand someone souring on Aliens because of Alien 3, I can understand someone souring on Alien 3 because of Resurrection, I can sure as hell understand someone souring on Alien because of Prometheus, but Aliens and Alien? Really? I'm not seeing the issue from any angle here.