As I said I didn't like D:OS I and II much. The only game from Larian I truly enjoyed was the original Divine Divinity - and that was nearly 18 years ago.
As I didn't call every ciritc silly or childish you shouldn't call all people who don't agree with you "fanboys". Just be reasonable. I recall we already had such a discussion in the Deadfire forums.
As to why it looks a bit like D:OS2: that's fairly obvious, isn't it? What did people expect? A whole new engine after 8 months that somehow captures the nostalgic vibes of the old BGI & II but is very modern and great-looking at the same time? How?
Larian uses its own engine which they also used for D:OS2. It would be an ecnomomically stupid decision to not use the well functioning foundation they have. This saves time and resources which can be put into other stuff like story, nice quests, good characters, companion interaction and whatnot. They don't reinvent the wheel which is a smart decision - also given the success of D:OS I and II.
Besides that I don't think BG3 looks as jolly and goofy like D:OS2 does. Actually BG3 looks very nice for a 8 month old pre alpha. Also I never saw a D&D game with such good cinematic sequences. I think those helped a lot to create some Baldur's-Gate- or at least D&D-vibes.
I'm sure there will be a lot of tweaking and effect juggling until it's ready.
I like that it will go into Early Access. That way there's still plenty of time to give constructive feedback - e.g. if you still think it still looks too much like D:OS.