Ick. Not that it isn't exciting to see him start to unleash it, he's brilliant. But he's another ENFJ out to save the world, i.e., he's gonna grow up to be Bono.
Some day in this kid's career the Devil Itself will appear before him and say "if you did the screaming like the kids love sometimes in your rhymes, you know, to punctuate it, with FEELING." If he tells the Devil to fuck off, the world is saved.