The internet is the conductor of choice for most people to send their messages on, encrypted or not. I think you have to face that reality you’re always dealing with a device manipulating the electromagnetic spectrum in ways you can’t detect without a screen and associated hardware, what’s the problem? If you don’t want anybody to discover your secret(s) just STFU about it. Meshtastic is cool and everything but at the end of the day it’s a little plastic box mostly a battery and tiny chipset of which you can hardly comprehend the inner workings of on a nano scale. PFM pure fucking magic! 🪄