It has nothing to do with gate keeping IMO. You need to be blind not to see that this game have much more in common with DOS then BG. It's not a criticism, just an observation. Game like Pillars of Eternity have much more in common with BG than BG3, and they don't even share the same rule system.

BG3 is like a combination of DOS and Dragon Age to me. Both great games which I love to death, none of them are Baldur's Gate or even close. From the music to the UI to the NPCs, nothing screams Baldur's Gate to me. I still think that so far the game is really cool and fun. And even if later on we will discover how BG3 is related to 1 and 2, it will still feel to me artificial and forced.

Saying all that I am very glad that there's going to be a good D&D 5e game around for me to play. BG or not.