I saw a report on that today that that kid is actually 18 and he and his mom are playing folks for money. I saw it 3 or 4 different places on the webs.
He might be 18 now, but there's no way he was 18 in that video.
But I wouldn't put it past some sorry bum to do that.
* edit *
It's on the fake news as legit and celebrities are rallying around the kid, age 9. Take it with a grain.