It's true that you cannot compare any young player to Yamal, it also cannot be ignored that Yamal gets frequent games to accelerate his growth, and so the environment circumstances aren't equal. Regardless of how talented Yamal is, he is the beneficiary of getting a lot of minutes in high-pressured games, consistently, and in turn it accelerates his maturity and development. That isn't to say that Chido would improve in the same manner with equal minutes played, but it is a point that in order to improve you need quality minutes against quality opposition, and you need lots of them.
I maintain that playing kids in dead rubber games, or giving them minutes at the end when the game is already won does nothing for challenging them. Ambitious, driven and talented athletes need some degree of environmental pressure and challenge to develop quicker. You cannot hope to roll them out in pressure-less environments over a year or two and see that kind of rapid development. You get better by playing against the best, and against them at their best.