Linkbait formula: Take something that web geeks like (like Ender's Game). Then, publicly kick it in the nuts on your blog. Watch the traffic roll in.
...by comparing it to porn. That was the brilliant part.
Is money the only motivation? A ton of people blog for the attention, to feel smart, SEO for future endeavors etc. Forums, blogs, and blog comments are full of people tossing out trollish or evocative statements for all sorts of motivations. This post exists for the same reason that any trollish forum post exists.
However, my troll detector is silent on this one. I agree with pg that the author isn't deliberately dishonest.