How it should have started...
See my related post over on the T2 board for how they should have ended THAT movie...
https://moviechat.org/tt0103064/Terminator-2-Judgment-Day/5e1f5c4740ca0f34d2b09e18/How-it-should-have-ended
This movie should have started without any flashback and just moved right into the present day. No need to explain why John is no longer around...