He's a brat.

He's also a brat who has learned he can get more of a reaction out of adults by acting in a certain way that they find unsettling, thus reinforcing that behaviour. From the sounds of things, his bad behaviour has been getting reinforced by feelings of specialness ever since he got sent to a psychiatrist at the age of three for being a little more bratty than usual.

At this point, being a brat has got him all the way to being profiled in the New York Times, so I doubt there's much hope for him now. He's internalized "I am a kid who misbehaves, misbehavior makes me special".