Ok so things can be stupid and inconsistent as soon as you don't HAVE to do them. And yeah, it's easier to mix jump/disengage so no problem if the combats looks totally ridiculous... Because I still don't HAVE to jump, I just can. Nice point of view.
I don't really know why you're talking about sneak attack. It's not the point. AOO are useless, that's a part of the point.
Not sure it's really usefull to talk about it if that's your arguments.
D&D and the FR have a better sense of reality than BG3 whatever you think about it.