Question, why do we owe them federation? They claim that they are being brigaded by lemmygrad and the hate posts are a false flag. To me, that sounds like they are not able to moderate properly, and are losing control of their instance. This is the exact reason defederation exists, so why not use it? They can always come back when they clean up their instance.
You know I am all about de-platforming bigots! No quarter for hate!