For the same reason that The Little Mermaid isn't a fantasy, but is, according to the conspiracists, a subtle introduction to child porn.
They're furious that somebody, somewhere, is having some fun.
Sure, after all what's wrong with allowing our children to read about and see movies with likable characters who practice the occult in a very well packaged attractive way? How could that possibly be harmful? The more sophisticated of us know that these thing are just fantasy, after all Satan is just a childish personification of evil, and hell, if it exists at all 'may be empty'. /[SARCASM]
Well put. And since they are conspiracists, according to Chesterton again, our telling them there's no conspiracy is exactly what they'd expect.
And heaven forbid, children having fun? Oh, the humanity!
Nice talking to you again, sink.