Out of curiosity, why? AFAIK, Oculus has always required an account of some kind. The Meta account is separate from your facebook.com one, so it doesn't seem any riskier than an Oculus Account of yore.
The backend is still centered around your legal full name. They allow display names to be displayed, but people are getting their legal name still tied and occasionally shown on that meta Meta account.
I personally bet the old Oculus Accounts were also correlated to a user's Facebook/Instagram/etc. accounts using metadata such as IP address. I guess making it explicit using Meta Accounts does give them more leniency with data linking though.
