Yes this is good, but in the Central African Republic, you need an ID to obtain a sim card (the same requirement that keeps many people unbanked) source: https://bdatacenter.fr/wp-content/uploads/Report-from-the-Bitcoin-Delegation-in-the-Central-African-Republic.pdf

For them, they will need a different solution:

You're going to want to look at UHF for long haul communications, and long distance WiFi extenders if the haul is only a few miles.

For shorter distances, you'll want this: https://www.instructables.com/LoRa-Mesh-Radio/

If you happen to be working with a community that doesn't have internet access (I suppose in addition to an ID requirement to obtain a SIM card) like the Central African Republic for example, these projects are the way to go. Its just, internet citizens such as ourselves have a hard time getting this information to people who aren't on the internet.