But again Harry Potter wizardry is different than what the Bible warns against. In the world of Harry Potter it's purely genetic, the first book establishes early on that people that are wizards have wierd things happen to them constantly, things they can't control. These things happen because they have the genetic makeup of magic, they can no more stop being wizards and witches than someone can truly change their gender. Part of the reason for going to schools like Hogwarts is to learn to control these magical energies. Failing to learn to control, failing to learn to be a good wizard, won't stop it from happening, it just means they'll go through life with no self control. Harry is a wizard not because of what he's learning at Hogwarts but because of the genetic traits that were handed down to him by his parents, the same reasons that Harry is a male causcasion with brown hair.
Once again your position is entirely erroneous because it's based on the entirely false assumption that Harry Potter is presenting the type of magic that the Bible warns against. Because you start from this position of fallacy all of your conclusions are wrong.
Why would this excuse the portrayal of witchraft or wizardry in a positive light?
In reality, witchcraft is an abomination. The protagonist practices "witchcraft" or "wizardry," and sets a poor example for children.