A very bold statement for someone who grew their initial capital almost purely on luck. He did not work hard or grind for this million dollars, he simply was curious about an up-and-coming digital currency and bought some with his family's money. I'm not saying that he is spoiled or impulsive in doing so, but to say that he was driven to become a millionaire within 10 years and did so by working hard seems like BS to me.

Back in middle school I was introduced to bitcoin when it was worth just a few hundred dollars. I had made some profit but a lot of my BTC was spent on steam games and god knows what else. Looking back at my transactions now I see figures like $450 spent on PUBG. Yes its frustrating that I didn't save it all, but I do not blame myself, as at the time I did not have the insight to understand what bitcoin was and how it could potentially grow, how to hold investments and etc. And as smart as this little boy may have been... I doubt he had the insight either, it was just pure luck.
If this boy wants to show off what he has done, then let him, its a fantastic accomplishment and it shows how the changing world is giving people opportunities to cash in who may have not had those opportunities in the past.
But to say it is someone's fault if they don't become a millionaire in a decade is preposterous, as it wasn't even his own "fault" or own-doing that made him a millionaire either.