The shitcoinery folk are starting to get the idea that you can send and receive funds without necessarily having a wallet.
Unfortunately (fortunately, for us), this capability is tied to bespoke tokens.
In the case of #nostr, it can be done having a npub, and a NIP-60 wallet accepting ecash. That’s it.
It can even be done without a NIP-60 wallet, if the npub can read NIP-17 DMs containing locked ecash.