Penny Arcade doesn't like Brandon Sanderson?

This was today's comic, thought it might be of interest:

(via Penny Arcade)

Thoughts? I know Sanderson is a polarizing figure with some people loving his work and others thinking he's a hack, but how accurate do you think this comic is? Now, I've never read one of his books - I have a used copy of Mistborn that's sitting in my reading queue, but I haven't gotten to it yet - so I can't voice an opinion. I do think his magic systems are interesting, though, so that's something.

Edit: On the other hand, someone on their forums pointed out that this might be more of a criticism of Sanderson's more rabid, die hard fans than Sanderson himself. Then again, Tycho is pretty explicit about not liking Sanderson in the first panel, so who knows.