To try and counter some of the stupidity in this comment section: There is nothing illegal about the piracy community and not even Reddit blocked it, the dbzer0 server has been one of the most civil and well managed around and this is a rediculess move!
Absolutely but teaching others to pirate isn't, it's illegal for a platform to host copyrighted content and it's illegal to host direct links to contents, NOT links to sites that host links to content or even the content itself...
That's not what the poster is talking about. Whether the piracy subreddit or the lemmy community, there are strict rules about sharing copyrighted content, asking for it or posting links to it. These communities are about discussing different technologies around BitTorrent, usenet or debrid and how to leverage them to share content.
All of the above can be used for perfectly legal reasons such as sharing Linux ISOs or public domain media.
If you use those to pirate copyrighted content that's your decision.
Calling these communities illegal and blocking them is akin to schools not permitting students to use backpacks or lockers because they could be used to hide guns.