My ten year old agrees. I let my children be exposed to culture while taking on the added burden of talking about what the bible says (ie in this case OT bans on witchcraft, and NT advice to not make your neighbor stumble ). In the long run I see this as the best way to protect my children. If they can discern evil and be equiped to consult the bible and use it as direction for their lives, I have accomplished more than out right bans.
While discussing Harry Potter, I asked my youngest son of ten, whether he thought Potter stories could tempt him toward occult activities. His answer was a quick no, followed by a concern that it could affect other children his age. The danger here is not that everyone who reads Potter will become a satanist. The danger is that some will and that Potter will be one link of the chain that leads them there.
Hary Potter ping.
Your son seems quite insightful. My oldest boy, 11, just read the first Harry Potter book, and said it was reasonably interesting; maybe he'll check out another from the library. My 14-year-old daughter said it was boring.