You could probably just block ani.social and that be it. Im already in talks with the owner of touchfluffytail to move it there for that very reason actually
You're asking a single community to move to ani.social so that it will be affected by your instance block? Am I reading that right? Why not just block it separately?
As a mod for that community I can assure you thats not even the main reason. Thing simply is it doesn't fit with lemmy.world. ani.social is the place where a community like this not only fits but also would do a lot better in the long term. It would also help with debloating lemmy.world as its already way too big for its own good. Couple all that with not spamming local, moving to ani.social has been long overdo