Could be, but doesn't really help with nostr people hiding their IPs unless they were to use it to roll their own vpn and have an exit node somewhere. These types of things sometimes you gotta configure extra routing/iptables to let the traffic out of the remote network, their use case is usually focused on connecting between private networks that someone is the owner or trusts both networks and then staying on that internal net. 

 it's very easy to do the same things with wireguard anyhow