Why is it a sin to read for fun?

In this article, http://www.newsweek.com/id/193475, the author asks the question if Jodi Picoult hurts literature. I think the answer to this is that she does not hurt literature. I think that she has her own style of writing that appeals to young girls but it still doesn't hurt literature. I think that anything that gets people (especially kids) excited to read is not a negative thing. I still don't see how the argument of Picoult hurting literature makes any sense. Picoult is not a "sell-out" writer. She does her research and writes about controversial arguments making her readers think about their personal opinions on widely-debated issues. So not only is Picoult making people want to read, but she also writes quality work that should be acclaimed instead of questioned.