Technical know-how is the least of their problems. The tech is irrelevant to me. Facebook's user-hostile and abusive actions have made it so that now anything they make is automatically something I want nothing to do with.
In my opinion, no matter how good the tech is, anyone foolish enough to participate in Facebook's "Metaverse" is just bending over, spreading, and asking to get screwed over and over again. The company has repeatedly demonstrated that it is toxic, criminal, and actively harmful to their users. No amount of fancy VR tech could ever be cool enough for me to let them use me. They can change their name as many times as they like, but they've already shown us what they are.