Baldur's Gate Iand II were "dark fantasy" games? Enters Minsc...
If there's something that's goofy and silly it's gib animations. Critical hit with a dagger: explode!!! Beaches on the other hand are neither stupid nor goofy. Never been to one? You should try.
Being able to set oil on fire (like you could when playing D&D as a tabletop game) can't be stupid and gimmicky. It's more true to D&D than BG could be (due to technical limitations).
The teaser with the gruesome transformation from human to mindflayer seems to hint a pretty dark story. No fun was spotted there. It was pretty dark and gruesome. The new cinematics were partly sinister and all epic. Didn't you see?
Wait: BG I and II were not intended to be funny? Haven't you read any banter between companions? Haven't you gained Lilarcor? Haven't you met Noober?
I swear most of those self-proclaimed BG experts seem to have forgotten what BG I and II actually were like. They were full of silly moments and goofyness and Helm shall smite me if those weren't intended to be funny.