Hmmm... does he say something that goes beyond his condescending style? If he wants to criticize naive pleasure-hedonism, fine, but to talk of "best interests" without bothering to specify what he means by that phrase strikes me as an attempt to grab my utility function. At best it seems like a way to signal "Look how rational I am!" without having to admit to the banal motivation of wanting to sell books.
He's saying that our desire for punishment is potentially a lost purpose. How is that an attempt to grab the utility function?
Also, I'd be interested to hear why you read this as condescending; I don't see where you're coming from with that.
Another month, another rationality quotes thread. The rules are: