It can punch mages to potentially break their concentration

I'm not making excuses, I'm just saying that Larian deserves to get a free pass on this one for releasing a game that exceeded the already high expectations, not for the demand. And personally, I barely encoutered any bugs in a 90 hour long save...

As for them "already having 5e", that's true, but it's a system that is rather complex and which only gets more complex with higher in-game levels and items which all slightly modify the game - which is easy on tabletop, but I can only imagine what a nightmare it must be to implement this in a computer game. And as far as I know, there aren't any other computer games that truly implement 5e. Sure, there's Solasta, but that's highly modified.

As for the engine: I really don't see it as a valid point, as they had to massively change and upgrade it between D:OS2 and BG3 anyway, it's just too different.

Because Larian is relatively small compared to Bethesda and the game exceeded the already high expectations, it's a AAA D&D 5e game, which is something people were looking for for a long time. Larian deserves it, and they are actively fixing the game anyway. Bethesda has no excuses to be releasing games that have the types of bugs that they do after having such giant successes like Skyrim. They have the money.