Thing is, the sequels showed that, every time a terminator was sent back in time, the time line changed. That means speculation on what would have happened immediately following T-2 becomes irrelevant because the time line will be changed in the past.
Quantum probability is a strange thing. All things exist until a choice is made, yet there seems to be a certain inevitability as far as human events are concerned. I really liked “Terminator: Dark Fate” it showed that, even though Sarah and John actually succeeded is stopping Skynet, humans still managed to develop the technology are cause the same kind of disaster.