Actually, i too agree with his point, this young player could be a great player in the future no doubt, but i am sure China has lots of younger players who can beat him with no mercy but they didn't show them or made them in tours yet, so i think China will always keep generations to be on top for years coming, i feel like this player will be like Jun Mizutani in the future, he will reach 4-6 ranks at most in his generation, unless China will bring much more players then i think he can't be even in top 10 for long.
We just have to wait, i don't think Japan will wake up and China will sleep, but who knows, we want to see more non Chinese rivals in the future.