This is a fair point, and one I think is very important to consider. When I wrote the original quote, I was not thinking of another facebook, but rather a platform that would work on issues like providing access to local government meetings, and probably be closer to what we now think of as "journalism". Which the lack of is a major problem in many parts of the country due to the declining newspaper industry.
Small towns and rural America is in trouble, and although it's naive to say there are simple solutions, I am optimistic that it is possible for technology to solve some problems.