As a fan of BG1&2 I did enjoy two characters mentioned, but they do feel like they don’t quite belong, and as new characters final acts seem underdeveloped at a cost of the new comers I don’t blame for anyone reacting this way.
Personally, I wish the whole game was closer to act3, as I care for Minsc and Jaheira thanks to BG1&2, but BG3 didn’t manage to make me like or care for the new cast, but to each their own.