I think this is kind of like an air conditioning company saying, "If it can cool you off in the tropics, it can cool you off anywhere!"

The facts are simple: there are significant parts of Africa that are very sparsely connected to what is commonly available in many (or most) other countries of the world.

I get how this can be somewhat offensive, but I also think the point comes across and isn't directed at the African people.

If it works in Africa, then, objectively, it works in sparsely populated and sparsely connected areas.