Interesting. What does the hash represent? How does it bypass the home NAT? I also think

Holesail

Holesail.io - Open Source P2P Reverse Proxy

Create P2P tunnels instantly that bypass any network, firewall, NAT restrictions and share your local servers with the world securely.

is an interesting project for large traffic. But for #IoT devices, http-over-nostr would be the best. All kind of Arduino/ESP32 projects can easily connect to websockets, so they could serve simple “websites” for configuration and operation.