Yes, I do find the doomsday prophecies very tiresome. Most people can already tell that this game will be a success. The question is how big is gonna be. And it deserves criticism of course, why it needs it, that's the point of the EA. But still, acting like BG3 won't be a successful entry for both Larian and DnD games, is just not realistic.
I'm not really doubting that it will work out and end up a half-decent game. But will it have anything whatsoever with the franchise that lends its name to it? That I am not sure of.
It does take more than just throwing something together that more or less resembles 5E and touches the city of Baldur's Gate to actually make a Baldur's Gate game. Larian has the ability to make a proper sequel and would have been my studio of preference to make the attempt before this whole thing was announced, but whether or not they're actually going to manage a sequel remains to be seen.
Yes, that is a bit harsh, but that's how it has to be when you very intentionally decide to use the name of some existing and highly appreciated franchise. If we allowed any odd effort to fully be a sequel to anything decent, we'd end up with every franchise taking the turn of Far Cry or Serious Sam or the Ass Creed.