The way i see how Larian implemented BG3 rules. Not knowing properly all intricacies of 5e, but decided to make game based on it. Met "carpet bombing" of critics about how 5e rules actually works, but internally decided to go with: "Well, we personally get used to play D&D in different ways, with 2+ fireball per round etc. So, we stick to it". And later when encountered problems with some encounters being too easy, instead of adjusting core mechanics to real D&D mechanics - artificially attempted to buff some bosses.
Which actually brakes the whole concept of D&D, system designed to be understandable for newcomers. In BG3 - you really have to minmax and follow meta, to be good in game. Or shame yourself by switching to "story" difficulty.