Yes! Reticulum is in fact the solution to the security problems the mainstream mesh networks currently hold.

Not only can you tunnel Reticulum over Meshcore (a custom interface for that exists already), ~~there is also a Reticulum stand alone device that comes with encryption at rest https://github.com/cryptspeak/csCardputer/ ~~ scratch that, turns out thats a fork of ratspeak - a vibe coded trash project backed by sus capital and questionable incentives.

The other alternative would to just use rnodes instead of Meshtastic or Meshcore. But rnodes are usually not self contained, and depend on a phone or laptop for the routing.

Laptop and Phones have millions of lines of code to work, increasing the attack surface, hence a self contained device with encryption at rest like the csCardputer would be preferable in some cases because they can be somewhat more easy to audit.