That's right, I think (and you seem to be agree) using another name than Baldur's Gate "3" wouldn't have changed a thing for them.
That's the exact reason why many people think Larian spit on them (and why discussions are so hard and emotional)
They have the rights, WoTC blabla, I know those things of course.
We don't know what their marketing research told them, so we cannot say if it would or would not have changed anything for them. It is certainly possible that using BG3 is a marketing tactic (not a "cash grab" as some others have said), and that's fine if so. It's a business too.
You're disappointed the game isn't going to be the way you envisioned. I get it and I'm not unsympathetic. But, that doesn't mean it won't come. And I am sure the name doesn't mean as much to the other side either. If Larian was making a game to suite the BG1&2 devotees, but called it something other than BG "3", I doubt there would be much discussion on the matter.
