Remember that lemmy.world has to keep a copy of whatever content appears in a federated community on their servers, making them legally liable for the content. At least they just blocked the community instead of defederating.
Basically they blocked the communities but not the instances they were hosted on, so people on lemmy.world can still interact with posts and comments made by people like me
I mean if you support illegally hosted material you can be forced to take down your website. As much as it sucks, piracy is illegal. Anyways, they haven't defederated, just blocked that community.