It's impressive that he did it at 12, but like you said, he had years of focused practice under his belt before he did this one. Anyone can do this level of work - they just need to actually learn it. It doesn't require someone be born with talent.
Articles like this contribute towards the gatekeeping feeling people get about the arts in my opinion.
>Anyone can do this level of work - they just need to actually learn it.
Sorry, that's like saying with enough math practice, any kid could perform at the level of young Terry Tao (e.g. teaching himself calculus at 8, winning a gold medal at the International Math Olympiad at 12). Some people are just intrinsically talented at certain things, and no amount of hard work in people lacking those intrinsic talents will get them to that level. This is indisputable when it comes to athletic talent; everyone would agree that no matter how much an average tall person practices basketball, they will never play at the level of Michael Jordan, LeBron James, or even the lowest ranked NBA player [0], for that matter. Artistic and intellectual talent is no different.
[0] https://old.reddit.com/r/todayilearned/comments/1oxpng5/til_...