I don't have a FB account and will never get one, but I'm casually interested in the quest2.
Facebook said something to the effect of not requiring a Facebook login at some future date, and said future date has yet to materialize. Neither did they specify what the alternative login would be, but it wouldn't be surprising if it was just a "Meta" account instead.
That has nothing to do with Facebook's half-baked hype around the "metaverse".
For me it's just another "Libra".
Minecraft, Fortnite, hell FFXIV and WoW are all digital spaces where people go to hang out with friends. You don't just log in to play the game but to hang out -- the digital version of "being in the room" that feels really different than something like a group chat.
I'm not at all surprised that the owners of a bunch of successful "classic" social media properties is rightfully scared of a completely different kind of social network that crept up on them and that they have zero foothold in.