In "Finding Darwin's God", Kenneth Miller makes Hitchens' point much better I think. Rather than picking up on something which a Creator might do, even though it seems superfluous, such as making eye sockets without eyes, Miller points to evolutionary adaptations that seem to offend the moral sense. As an example, he mentions some monkeys in Africa where the new dominant male will kill all the remaining baby monkeys of the past dominant male. That is an adaptation that seems pretty cruel, and hard to explain from the viewpoint of a Creator.

I wonder if Dawkins has read Miller.