Are children and young adults banned from selecting products based on marketing inside stores?
What makes advertising, I dunno, a remote controlled plane to a kid so much more unethical than advertising it to an adult?
It is possible that this doesn't harm children. However, the deliberate injection of emotional manipulation and disunity into families with young children in order to stimulate the purchase of toys doesn't strike me as particularly good for the nation, and I don't know that I would have to think very hard about my decision if given the option to prevent it using the law.