The thing about meshtastic is the walking distance range and limitation to text messages.
Though I don't know if it is possible to integrate a LoRAWAN concentrator with a nice collinear J-pole antenna to mount on the top of your house to move to a double digit range where it could be useful as a neighborhood mesh with multiple channels. (With the added benefit of using lorawan devices like pet trackers and things).
Still Lora smart (but local) home agriculture, water collection, etc... Is a really cool technology for large properties.
It's interesting the difference in what people think a collapsed civilization will look like.
Some people think we will "return to monke" where wilderness survival skills will be essential and people who have them will be the "main characters." That would probably be the easier and better future.
The more likely option will be technofeudalism where rich people have small, brutal armies and control localized power grids, farming operations, and politics with tech as mass migrations happen and wildlife becomes all but extinct outside of human cultivation. Survival skills won't matter when all land and food scarcity is controlled by a rich few with absolute control. The average survivalist will be wiped out with the first natural disaster or by the feudal lords with drones. Return to nature might only come after 50 years when chip supplies and power grids have dried up and fallen apart, but it would just as likely be mad-max as oil could likely still be used.
Who knows. Fascism might take over with how it is going now and solve the climate crisis with mass genocide and forcing green energy for all we know.