I'm willing to bet Dale is being facetious.
As for my "theory", I immediately got an idea of somewhere along the autistic spectrum, which is why I was a little hesitant to weigh in with the joke responses in the first couple pages. The fact that the OP didn't really take anyone's advice and merely said he is "displease" leads me even closer to think something is not registering and thinking he did nothing wrong. And while technically he's only guilty of not looking it up himself, he also doesn't realize that documenting categories from a 9 year run (and in the ballpark of about 1,800-2,000 episodes) is taxing work that's not gonna happen.
That being said, a little research on one's own part never hurts either, instead of expecting everyone to do all the legwork. Matt O. gave him ideas, I gave him a few more, the rest is on him.