Subject line pretty much covers it. Say I get a hateful comment reply from user xyz, so I block them. I go back to my profile, even after refreshing, to look at my other replies, and xyz is still visible there.
I should be able to be done with hateful people/comments.
With a federated model, I’m not sure if there’s an easy way to accomplish this. If your comment gets federated to another server, it’s difficult to prevent a specific person user from seeing it. I think some sort of “centralized blocklist” would need to be shared and maintained between servers.