No it's not. But you can be in denial if you like. The majority of movies are made by urban people about other urban people. The majority of music (even country music) is made by urban people. Technology is made in urban labs and universities. The computers and software that we're using to have this conversation was created and popularized in urban centers. The bible that you quote in your signature was developed and popularized in urban centers. Even the heavily edited and politicized versions of the bible specifically made for rural Americans were developed and created in urban centers (the New International Version that is the text most bible thumpers quote was designed and developed in New York City and it is a heavily political document tailor made so that you will thump it).
Most of American culture, even rural American culture comes from urban centers. Now, I don't actually think that it's a contest. Despite everything I've said in this thread, I don't really care where culture comes from or where ideas come from. I just want the best ideas. That they come from urban centers is why I like urban centers and why I live in them. I would never presume that it is the other way around.