But shouldn’t historical preservation be the top priority instead of convenience?
It all depends on how literal you want to be. Two frames is 83 milliseconds of a film. It’s also not unusual for a few frames to get skipped at a reel change, so it’s unclear how many theatrical audiences really saw those 83 milliseconds in the first place.
I get the argument both ways. But it’s 83 milliseconds that breaks stuff (but not as much stuff as people think), so it’s ultimately a matter of how much you really want them. Different people, different priorities.