I'd also add that this is a good thing. I don't want every relay to be forced to host child porn, for example. They should have the ability to preserve their principles while running a relay. The same can be said for objectionable things that are legal, such as adult porn, etc.

Dealing with such things legally would be easier too since not all relays will allow illegal content. This reduces the chances that governments go after #Nostr as a whole vs particular relays that promote such activity. In my opinion, of course. I can't see the future.