Their prequel on Meta: A few thoughts about #Meta's #ActivityPub project (and whether we should instantly block it)
To recap: I'm also very, very suspicious of Meta and I know they don't have good intentions - I'm not suggesting that maybe they've changed and they will do things differently, to "give them a chance" first. I just don't think that declaring to block them makes much sense at this point in time. Maybe they will give us real reasons to block them once they launch their platform. But I'm not by principle against interacting with Meta users, as long as I can avoid Meta's ads, black box algorithm and data mining.
I guess you do need to know the domain name first to block it.