After a thread was made in !support@lemmy.world asking to defederate from lemmy.dbzer0.com for “the facilitation of piracy, and copyright infringement in general which is illegal”, the admins of lemmy.world deleted it prompting discussions on !asklemmy[@]lemmy.ml and !piracy[@]lemmy.dbzer0.com.
But they don’t have to leave Lemmy, they just have to leave the instance.