Internet shutdowns are devastating for human rights. We can’t rely on tech oligarchs to save us, especially when these same companies and governments are the ones to sever our access to the internet and telecommunications. This is why it’s important to set up communication mechanisms before a disaster happens.
I prefer reticulum. They make it so the network is independent of the physical layer. You can even use old AX.25 modem if you wanted to. Which is what I did. I basically use MCU to be a modem and use 3.5mm jack to connect it to any amateur/HAM radio