I totally agree. Even if this is what Meta is planning,and it probably is, getting everyone to defederate now just means we’re skipping to the “extinguish” phase.
Meta doesn’t care about leeching users from us, we barely have enough users to show up on their radar. Meanwhile there are plenty of people who want to see what’s happening in Threads without selling their souls to Meta, which is a perfect chance for other Fediverse instances to step in and add more users.