How can anybody possibly "rate" speech?  I don't care much for sports, so I'd rate football pretty low.

Obviously, most of my buddies would disagree with that assessment.  

That doesn't make me a genius and them fools, but I'm not going to change my viewpoint anytime soon, nor do I expect them to change theirs.  

Not only would I rate some erotic/pornographic writing pretty highly, it's also unclear how one distinguishes between the two.  Autobiography of a Flea is a "classic" (read: old and much-reprinted) and I don't find it very sexy at all.  Many others find it tremendously exciting.  

I find the whole basis for his distinctions on writing to be extremely subjective and thus worthless.