I do strange things, so it's possible that the cause has to do with some quirk of my behavior while closing the account in 2011, or while attempting to reopen it in 2026, and not somebody else's behavior in the interim.

I don't really care about facebook, I found a buyer for the thing. I'm just saying that the use of biometrics is bad engineering because it amplifies the severity of adjacent bugs to "blocker". Starting over with a new identity should be painful enough to discourage bad behavior, but it should be possible to enable users who do strange things sometimes to navigate the system.