Children tend to be rather better observers of adults' characters than adults are of children's, because children are so dependent on adults that it is very much in their interest to discover the weaknesses of their elders.
Rock gives children, on a silver platter, with all the public authority of the entertainment industry, everything their parents always used to tell them they had to wait for until they grew up and would understand later.
Education is not sermonizing to children against their instincts and pleasures, but providing a natural continuity between what they feel and what they can and should be.