No, not really, or at least, not in my mind. Here's how I see the films:Kolby Jack said:By that logic though, doesn't T2 on its own invalidate T1? If Judgement Day can be prevented, there's no need for John Connor, meaning there's no need for Kyle Reese to go back in time. John Connor beats Skynet in the future. That's the whole point, and I like how T3 really hammered that home. T2 is a great action movie but its plot is kinda bullshit.
T1: "No fate" is still relevant, given how Reese presents it to Sarah, because it reinforces that just because the future appears to be in the bag (Skynet will lose, John will win, etc.), that doesn't invalidate the necessity of her own actions. She can't cruise through this trial, or the years ahead, just assuming everything will work out. There was a tagline for T1 that "the greatest battle will be fought in the past" (or something similar), and if we take that as writ (which makes sense, since T1 does establish that Skynet's ploy with the Terminator was a last ditch effort), that still doesn't invalidate everything that came before.
T2: "No fate" becomes more relevant, because it allows the creation of a new future (there's the argument that T1 is also a new timeline as well, that at some point, John might have had a different father, but that's another issue). So, T2 ends with them averting JD, and at least in the context of the movie, permenantly preventing the nightmarish future that awaits and whatnot. I don't see that as invalidating T1 or the Future War. Sarah and Kyle had to fight, suffer, and in Kyle's case, die, to get to this point - it doesn't invalidate the events of that film. It doesn't invalidate how in a different timeline, 3 billion humans died, and the remnants of humanity had to fight a war to save their species. It doesn't invalidate the efforts of that John, in that timeline, to lead to a sequence of events that in this timeline, gives the world a better future. Basically, T2 still can't happen without T1, just as T1 can't happen without the Future War.
T3: "No fate" is either tossed out the window, or refuted. T3's take on things is that the future is set, or at least, set to the extent that events have to play out a certain way. That Judgement Day will always occur, John will always be leader of the Resistance, etc. Right from the start T3 takes the opposite approach to time travel that the previous two films do. It does so in a way that makes the last 20% of T2 arguably pointless, because from the moment on that Sarah drives off to kill Dyson, these events will have no impact par pushing JD ahead six years. Arguably, it makes their actions worse, because, at the very least, there's going to be more people in the world in 2003 than 1997, so more people get to die in nuclear fire. Salvation follows on from T3 and kinda establishes that, yes, delaying JD was a net negative for humanity, at least by 2018. So, T3 is written in such a way that a lot of T2 is invalidated. T2 doesn't invalidate T1, because all of T1 is required for T2, and the Future War is required for T1. T3 is based on the premise of T2 being unneeded at best, and disruptive to humanity at worst.
I'd be a bit more forgiving than that if the film wasn't an aping of T2. Not that T2 didn't follow a similar formula to T1 to at least some extent (assassin and protector both arrive, assassin and protector close in on target at the same time), but after that, T2 does diverge from T1. T3 follows T2 almost entirely in terms of its plot beats, only with not nearly as much grace (e.g. compare the minigun scene in T2 to the one in T3 - the former is beautifully shot, has great music, and serves as character development for "Uncle Bob" per the "0.0 human casualties" bar. The one in T3 lasts a few seconds, and has the T-850 simply flash "0.0 human casualties" - that isn't significant, because the T-850 has never been blase about human life. It's just a scene that's there for the "kewl" factor).
And again, Genisys also harps on the T1/T2 plot beats, but it does so in a way that's sold as the very basis of the plot - a Skynet from a very, very far future has altered the timeline, but events still have to play out in a certain way to some extent. T3 sells itself as being a natural progression of the timeline, so there isn't the same excuse for its plot being a retelling of T2's.