They simply dislike turn based combat (And apparently real-time combat... So seemingly they hate all combat?)
As BG3's combat is turn based, it's natural they would dislike it.
Yes this, mostly. I generally dislike combat in RPGs, but do not hate it. But I do very strongly dislike TB combat, and do consider BG3's combat to be mediocre. And I will even say that I consider TB combat systems to be objectively bad. The worst RT(wP) systems are still way better than the best TB systems.
Bg3 is the best in turn-based combat - but if you don't like TB combat so be it.
Elden Ring (Dark Souls) is the best in Real time combat. But if you don't like RT combat so be it.
So that leaves Disco Elysium then? Detroit: Become Human? Those two would be the best in no combat, pure RPG.
I've been okay with the combat in the old BG games, the IwD and NwN games, the PoE games, the Pathfinder games, and yes even the DA games. I also was okay with the TB combat of T:ToN and especially Solasta. Seems you just can't (or refuse to) get my nuanced point about combat in RPGs, which to repeat for the millionth time is that it is something I am willing to tolerate for the sake of enjoying all the other aspects of RPGs. In most games I simply dial down the difficulty setting so that I can breeze through combat encounters. This works just fine for me (assuming the game allows for dialing down combat difficulty) since my sense of my self-worth is not even in the slightest tied to masochistic combat difficulty in a game.