I might be biased as I agree 100% on the takeaway, but this is amazing! Not only did he use best practice, but most importantly he made his own conclusions, and learned new things, instead of just accepting things how they where.

When I started coding, I though you could only have one letter variables, like a, b, c, x, y, z. I did not question this, but one day I ran out of variables ...

Edit:

I looked at some of his other posts and saw an altitude bed on an old photo, witch concludes he probably is/was an athlete. I think it's common among athletes to have the mindset that they want to keep improving their skill level. This can be a good trait as a developer, but they are hard to manage, as such persons will quickly outperform their colleges and get bored. They work best with other people like themselves, or with old experienced developers. Make sure you protect him so that he do not burn out himself or his team. While these "10X" developers can work very hard, they are just humans.