you really wouldnt want to do that.

you can't do 2fa. if your area isnt saturated enough, you may end up with "islands" where your message won't get through to the intended party. if your area is too saturated, you may use up all the hops before it gets to your intended party. if you live in a hilly or wooded area your range will be diminished. if your home internet and/or power goes down, you will have no access to the internet via tethering. sometimes i have trouble with 2 nodes in the same room not seeing eachother. most devices ive seen are very low spec and can be very glitchy.

meshtastic is very cool, but it is nowhere near a replacement for a cellphone. give it some years and some iterations and maybe we can develop a robust communication alternative, but i dont think we're there yet.

that said, yeah, get a few nodes, give them to your friends, and see how you like it. maybe i'm wrong. also the more people using it, the more likely it is to grow into something more usable.