Ah yea I've looked at Reticulum before; very cool.

It's a bit too specific, though, for my current interest. I think generic mesh networking approaches are more widely-useable (like what nycmesh does: https://www.nycmesh.net/faq#how) - for instance you could be running a nostr relay on a mesh network like theirs and other nostr users could be connecting to your relay through the mesh network rather than hopping out to an ISP. If the wider internet went down, the mesh would be uneffected.

I know that latter point is true for meshtastic as well, but given that you can't do anything with it aside from meshtastic-specific messages, it's quite limited.