Due to the absurdity of the laws. They operate with concepts like "website," "followers," and so on. In Russia, for example, a relay would attract the attention of regulatory authorities if it had a web interface like Ditto, a client with a follower count, and support for encrypted chats. The first will cause you to receive letters demanding content removal. The followers will make you report voluntarily once their number exceeds 1,000 (this law, it seems, hasn't been passed yet because they realized how dumb it is). And encrypted chats mean prison. 

 Crazy.
But actually they can be benefit from Nostr, they should only pay attention to use or bootstrap relays in other countries.