They are a lemmy instance dedicated to the facilitation of piracy, and copyright infringement in general which is illegal. It is by nature in violation of the rules of your instance which prohibit illegal content, therefore it is imperative that you defederate it in accordance with your policies.
As OP said, he has received a reaction from the admins and with that his question is answered. I’ll close this topic for now since this is not a discussion community on what is piracy and what not.