nope. but individual relays can, that's why you post to several relays simultaneously, and also you can backup your content on your own relay and push it out.
Discussion
Ah ok thanks thought so.
That's how the censorship resistance works. Makes fighting it futile, as there's no central point of failure where the content can be removed. Similar to how sharing bits of a file on bittorrent network spread over multiple clients makes it next to impossible to shut down people from downloading the file.
