Seth Carter said:
Uh T1 prettymuch sets up fate. Since JD has to happen for Kyle Reese to get sent back for John Connor to be born.
In the context of T1 itself, even if John's conception can be taken as pre-destination paradox, the film still introduces us to "no fate." As in, in that specific context, Reese is imparting it to Sarah that her future is in her hands, that she has to take charge and survive, so that her son survives as well.
T2 and T3 establish that you can maybe stretch the proverbial rubber band, but thats always snapping back to the pre-aligned course.
Um, no.
T2 doesn't do this. T2 runs with the idea of "no fate" even further. This is reinforced over and over, mainly from Sarah's POV, to her carving the words on the bench, to her nightmares of the future, to the dark road analogy, to how they stop Judgement Day - as in, in the context of the film itself, history is changed, and JD never occurs. There's nothing to suggest in T2 that future events are inevitable, and the entire film bases itself around altering those events. Watch to the end of T2, and there is absolutely nothing in the film itself that suggests that the future war will happen. If anything, it suggests the opposite.
T3 is the film that turns all of this on its head. You know, the tonal whiplash is arguably bad enough, but if we look at the first three films as a stand-alone trilogy, then this becomes even worse, because it makes the entirety of T2 redundant. Not just in terms of theme, in terms of plot. Like, you could easily have T1 occur, have T2 never occur, make slight alterations, and you wouldn't really miss anything. It's not a good idea in a trilogy to make your second installment a complete waste of time. It's ironic that T3 cribs so much from T2 in terms of plot and action, but simultaniously invalidates it as well.
I'll give Salvation some credit for at least trying to broaden the setting a bit, though the execution would barely qualify as "shoestring" quality under any reasonable thought put in to it.
Salvation takes the #4 space on my ranking of the Terminator films, but setting isn't the issue for me. If Salvation has a key issue, it's that the film isn't John's story. It's Marcus's. Marcus gets more screen time, and it's Marcus who has the character arc...all this for a character who dies at the end. If Salvation had its promised sequel films made, then maybe that would be mitigated, but since all it got was a lacklustre comics conclusion, I have to take it as it is. But whatever flaws it has, Salvation isn't copy-pasting a prior film, and nor is it undermining it.