I think that is a problem and should be treated as such. BG3 should not be the combination of D&D and DOS, it should be pure D&D or almost it. Just remember how the first gameplay reveal was trashed for looking like a DOS mod. The majority of RPG fans are more into D&D than DOS, so the developers should take that into consideration.
I'd say it's not about "majority of RPG fans" but about what BG3 was marketed as. And this is primarily "Baldur's Gate proper main entry". As well as a D&D game. For me it matters not whether I would like or dislike D:OS (haven't played yet). I like TES, but I would not want TES in Baldur's Gate. I also like The Witcher games, but I would not want Witcher in Baldur's Gate. And so on. Baldur's Gate should be primarily Baldur's Gate, not primarily a mix of Dragon Age and Divinity based on 5e rules.
