@stux Who's being forced here?
"You should block [X] because [reason, e.g. they federate with Threads]. We block anyone federated with Threads" is no more dictatorial than saying "Don't tell other servers who to block, don't warn them you block servers that federate with Threads".
People can run servers as they please, federate and block as they please, develop policies and red lines between themselves. Defederation cuts both ways.