Some more thoughts on the challenge of #Meta #Threads integrating ActivityPub support while living up to their normal obligations.
1) Enforcing actor and behavior-based content moderation will be hard.
All content moderation is either against the actor, behavior, or content (ABC model). With Federation, the metadata that big platforms use to tie accounts to a single actor or detect abusive behavior at scale aren't available (IPs, cookies, JS proof-of-life, TLS signatures, etc).