Meta just announced that they are trying to integrate Threads with ActivityPub (Mastodon, Lemmy, etc.). We need to defederate them if we want to avoid them pushing their crap into fediverse.
If you’re a server admin, please defederate Meta’s domain “threads.net”
If you don’t run your own server, please ask your server admin to defederate “threads.net”.
That is exactly how it works. If your users are abusing your instance, it’s on you as the instance owner to decide whether their usage is inline with your expectations as a host, or if they’re better served elsewhere.