You can argue that it is not true P2P, since you rely on a public-facing intermediary. A lot of p2p protocols cheat with relays, it is really hard to traverse

You can argue that it is not true P2P, since you rely on a public-facing intermediary. A lot of p2p protocols cheat with relays, it is really hard to traverse nats otherwise. Nostr can be used for peer discovery to bootstrap a direct p2p connection. You could also use a client/relay hybrid application, similar to other p2p networks. That would be fun to build. :-)