No, his argument is that "major art" is widely consumed by people who do not practice it. He uses poetry -- consumed by a small audience of people who almost entirely consider themselves poets -- as an example of "craft." I disagree with his definitions here. They aren't meaningful.
oops, yes, i misread your argument. agreed, porn would definitely be a "major art" by that criterion. (and really, who's to say it isn't? it's an orthogonal classification to good/bad art.)
