From one point of view, a major problem is that the Harry Potter rage promises what can't be delivered to his audience. Harry's got the magic powers and can bring about "good" things with them. Well, okay, we hear you Harry. But his audience, they can't do boo; they can only lose themselves in games of pretend. Like when the Lord challenged the sorcerers to "do something good or evil."
"they can only lose themselves in games of pretend."
Good point.
There's nothing wrong with children playing games of pretend. As a matter of fact, few children actually do it today, which is why imagination is in such supply nowadays.