I’m a bit skeptical of Facebook/Meta’s tactic; it feels like the start of an embrace/extend/extinguish campaign (to get people fleeing Twitter onto a Facebook-controlled service, and subsequently remove the ability to federate/migrate accounts from their instance in order to try and lock people into their own service rather than let them find their way to the Fediverse). Arguably, they (and Google) did the same thing with XMPP by breaking federation in their own implementations.