A few months back when there was all the talk of facebook joining the fediverse I figured nothing good was going to come of it, and this doesn’t prove me wrong. Fb doesn’t do anything unless they see money in it somewhere.
They are deeply threatened by it and are desperate to capitalize off xitters failing. Mark is probably enraged that he can’t just buy up the company and snuff it out.
I think it’s inevitable that if they aren’t going to use a blocklist (which they are probably too stupid to consider doing) they will likely end up in legal hot water for having the site become a war zone of alt-fedi instances harassing celebrities and random people off threads. I do not see how them federating will go well, at all.