Nitpicking, but that comment in the closing paragraph is jarring: "Anyone can put a urinal on the wall and call it art". It's clearly a reference to Marcel Duchamp's Fountain - a key work in the argument of what is and isn't art. However, that urinal, and its reproductions, were pointedly never mounted on a wall, but flat on a pedestal where it couldn't be used. It's like the author had heard the phrase but didn't know what it was about?
http://en.wikipedia.org/wiki/Fountain_(Duchamp)