I'm not sure how far into "prepper" that makes me. I don't have a store of canned food or weapons or a generator. I started down this track to keep my home lab (on which I self-host a bunch of stuff) online / protected through outages.
Additionally, the city in which I live has an ad-hoc amateur WiFi setup which connects over several kilometres. I used to be a member a long time ago but, ironically (in this context) getting fiber internet meant I kinda lost interest. It's one of those things that had just never gotten back to the top of my priority list: https://air-stream.org/
Feels like they're ahead of game on this topic.
If you own a house I'd look into very old school options like digging a deep hole to store your food in a dark&cool place - forgot the name for it but it'll work for weeks or months without a single milliwatt
This is kind of my point - I'm not saying you can't have applications that are usable across multiple UX paradigms, and I'm also not saying you can't write a UX library that automatically translates at least simple applications with little manual effort.
I'm just saying this requires active buy in from application developers into the ecosystem - you can't just run everything on all devices and have it magically work (with usability comparable to current state of the art in single device applications).
Like websites nowadays being usually designed for mobile and desktop devices