I’m all for individual users blocking Threads if they’d like to, but I think it’s a terrible idea for instance admins to make that decision for all of their users.
Personally, I don’t see why this is so controversial. I view it as a way to follow the celebs and organizations that would rather use threads, but from the comfort of Mastodon that is outside of Meta’s ecosystem.
ActivityPub and the Fediverse is designed to for natural selection to take place. So let it. The users that want to be part of the Fediverse are already here and won’t don’t leave based on what Meta does with Threads. Threads utilizing ActivityPub in the future justifies the means of the Fediverse more than anything else IMO. I despise Meta as much as the next person, but this is not the end of the Fediverse as we know it.
But that’s the risk taken when you create a protocol (ActivityPub) that anyone can tap into. You can’t create something that is open to everyone and then pitch a fit when entity you don’t like or agree decides to take advantage of it. Regardless of how big Threads get, it can’t supecede the ActivityPub protocol. If they decided to defederate down the road in attempts to extinguish the Fediverse, it won’t work, those users will still remain and Threads will go on it’s merry way. Meta can’t kill a W3C protocol.