I'm okay with that, people generally not inclined to pirate must not visit a pirated sub, by choice or by accident. They may get culture shock and mistake perfectly legal conversations for other things and make a false report.

Those who want to pirate generally knows how to search for communities for piracy. No matter who's blocking who, they'll eventually find what they want. The block will act as a filter of some sorts.

If that keeps the normies out then it's a win.