I would totally let them federate and then blanket ban them all. Seriously, don’t even let their content sync on instances like world (not worth hosting costs). This way the fediverse gets to consider all Facebook users as part of its own user count and I don’t have to see their garbage. We can have our cake and eat it.
That’s not good. The beef we have is with Meta, not the people. Federating with Meta only allows it to suck Fedi’s users data more effectively, while blanket banning everyone just sends a message that Fedi users are elitist dicks. It’s exactly backwards.
“The beef we have is with the Nazis, not the people giving the Nazis money and raising the Nazis’ profile.”
I do have a beef with people using services that are literally tearing society apart from within. I guarantee you that any Mastodon/Pixelfed/Lemmy/whatever instance I use that doesn’t defederate any and all Meta connections will have at least one less user to worry about in their stats.