Honestly, the whole question with FB stock is whether you believe the Metaverse stuff will pay off. I give them worse than even odds, but better than a 10% chance, to be the ones who get it right.
Now with all that said, I think there's a snowball's chance in hell that VR headsets become as ubiquitous as cell phones. It won't happen until AR. It's like TiVo and Netflix.
This is probably out of the cards for a generation. (At least in the U.S. and EU.) What Facebook fights with, they'll have to build on their own, a handicap not shared by their peers.
Them being ubiquitous or not doesn't change how inconvenient it is to not have vision of the surroundings. It's also not practical to use them.