It was inevitable and it's not their fault. Because of how the Fediverse works it means they're storing all content from those communities on their servers too. This means they're storing piracy content and can be subject to a takedown.
We knew larger instances would defederate from piracy communities at some point, don't take it out on the admins.
The communities discuss piracy, not host the content. They are two different things.
The user that requested it was a troll account create dhours before. The same user then went on to create a transphobic community and post hate. Not the sort of person the admins should be knee jerking to.
The Pirate Bay also doesn't host content, just links to torrents. Why has it been taken down then several times already?
When you directly link pirated content it becomes a liability. Doesn't matter if the actual content is on your own server or hosted with a third party.