I really think people feel it's not BG3 much more than they think it's not BG3
Yeah, for sure. And that's the problem. Feelings might seem to make sense to the person feeling them, but to others, they're not helpful without articulation. Otherwise, it's just a guessing game.
Agreed.
I have two more points in the matter, that might make this discussion more productive:
1. I think the fact that Larian teamed up with wizards of the coast is a very good (even a great) thing. Larian is very good in telling interesting stories and creating complex characters, but are terrible when it comes to building worlds and creating lore. the fact they are working within the boundaries of a well established world with well established rules, and are supervised with people that will make sure there are no major inconsistencies between the story they wish to tell to the history and the way the world in which the story takes place works is a huge step in the right direction for them.
2. I'm pretty positive there was no way to satisfy 20 years of expectations for BG3, so perhaps a different name would have been better.