@leo I think #Meta / #Threads will come up with subtle ways to abuse #ActivityPub to inflict a slow torture on existing #Mastodon/ #Akkoma/etc admins - drawing them into supporting Threads' quirky implementation of it. Like #Google did to #XMPP. This now-established playbook manouvre is way too juicy to pass up using again.
Then once this "drift" from the consistency in ActivityPub compliance is set - like a disease - then Threads will stop supporting ActivityPub, adding insult to injury.