No, he doesn't. He bases it on intuition. It can't be wrong if it feels so right.
Richard Dawkins: That is of course true. And I am not basing it on that. It seems to me that telling children, such that they really, really believe, that people who sin are going to go to hell, and roast forever, forever, that your skin grows again when it peels off from burning, it seems to me to be intuitively entirely reasonable that that is a worse form of child abuse, that it will give more nightmares, that will give more genuine distress, if they don’t believe it its not a problem, of course.
What does the evidence say? This.