Facebook deserves credit for iterating on solid foundations.
If they make VR useful outside of games and porn, then they will deserve credit for meaningful innovation.
To clarify why FB cannot be satisfied with the games and porn market is that theres a big gender imbalance in those markets, and it runs against the demographics of Facebooks other apps, which have equal or even female-majority user-bases.
Given its PR and branding issues, Facebook does not want to be a games and porn company (techbro) company.