Not his first painting. Nobody picks up a brush for the first time and paints like that. Not an original work either. Just a practice masterstudy, one of many many many he'd made up to that point I'm sure.
You shouldn’t be getting downvoted. If people would read the article they’d see it’s not an original.
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.