Basically anything that came after 2 pretty much spits in the face what came before.

The whole thing at the end of 2 was that they closed the loop and tied up loose ends and that "there is no fate except that which you make for yourself."

Once 3 came along and set the expectation that the rise of skynet was inevitable, the rest of the sequels have just run with that. Dark Fate took it even further by killing off John in the beginning of the movie.

I'll watch the movies for some good action. But as far as I'm concerned, nothing after T2 is canon.