"Every person that buys internet using Bitcoin connects to a BitMesh Wi-Fi connection close to them, which is provided by a client and functions by using the BitMesh app."
I don't think It will be available in many places. It is more like a test project which probably will never be developed at a larger scale.
I believe it doesn't mean that you need to connect to their Wi-Fi in order to earn bitcoins from them. It means that they want to establish a network of wifis around the world that can be used by other persons. Those persons pay in bitcoins and they buy "internets". Whatever that is.
That means you can only earn money when someone buys and uses your wifi then. Which, for the most persons, would mean you earn never. I mean how far is your wifi reaching? And how many people in that circle would know this project and would pay?