But at the end of day, that aesthetics is Larian's vision of that universe ... So I guess I'm really just bothered by what I feel is a dissonance between what combat looks like and what the rules lead me to expect.
But that's just the thing. It's NOT only Larian's vision.
They are making a D&D game set in Forgotten Realms, which has a vast amount of source material and the massive legacy of BG 1&2 to respect and build on. They can't just saturate it with their gimmicky video game tropes because that changes the tone of the entire setting. BG has humour but you don't eat pigs heads in combat, and D&D is not about spamming surfaces with arrows.
I absolutely love D&D and all previous crpg adaptations. At the same time, I don't enjoy Divinity much and couldn't finish either 1 or 2. I only bought them because there was a bit of an RPG draught. I don't agree an RPG absolutely needs the stuff Larian insists video games apparently have to have and are slapping on top of the 5e system. Solasta works incredibly well on 5e RAW as a video game.