I'm not really on board with this. I'm not sure why the fact that someone is 12, should mean that they shouldn't be told the truth. It's very obvious from these posts that the kid needs a reality check, to be taught about posing and claiming, as well as a lesson in humility. If you just tell him "yeah dude, that's sick, you're 12, keep doing what you're doing, it's awesome", i'm not sure he will ever live up to the potential you seem to think he holds. I think you would help him more by being honest, and telling him that the movie was weird to the point of being incomprehensible, and that claiming loads of stuff online does not make you a legit proprietor of a film company.
If he's told this now, in a proper manner, not just blind hate, there's no reason he couldn't become a legit filmmaker some ways down the road. But he needs to learn, a lot.