I fear that one day one of his opponents is just gonna snap and knock him flat with a swinger right to the dome. The immature sociopathic part of me wouldn't feel sorry, maybe even enjoy it. Yes, I'm sort of joking, I do not wish him harm.
But he causes harm to his opponents. The screaming doesn't prove him "right", like someone here said. Of cause it will affect even the strongest of mental mindsets, who would even contest that? You play against someone, you make a stupid little mistake like pushing an easy ball into the net, you think "God damnit, that was unnecessary". The other guy had absolutely no doing or credit in him receiving an additional point in the set and all you instantly hear is a ridiculous bellowing. You fail a service return on the first or second point of the set, CHOOOOO!!!!!!, you misjudge the spin of the third ball a little and just barely overshoot the table and you wonder whether your opponent will be able to speak the next day.
I have not the slightest of aversion to a shout of relief after a well fought rally. I have absolutely nothing against a stress relieving short "SO!" just before serving. But that, that is not natural. That in my opinion is unspeakably terrible sportsmanship. It is bad intent, and if its not bad intent, its ignorance. He might as well replace the CHOOO with HAHAHAAA. I would love to watch his games but I just can't.
I'm probably on the more sensitive end of the spectrum and I'm sure there are players that absolutely accept this as part of the game. But I personally want to win by being better at the game. I want to win because I am mechanically more skilled, because I possess more finesse and game sense, not by psychological warfare. The mental part of the game does not imply that I would want to try to make my opponent worse by shouting him down - and I expect my opponent to do the same. Where I play, people actually sometimes say "Good one!" after their opponents hit a particularly nice shot on them. That is beautiful and humbling!
For a positive note: Isn't it thrilling to see upcoming talents like these? I wonder how high he will be rated in his prime! He has many, many good years to come
Will he have a shot at beating Ma Long in 2 years time as a 15 year old like Wang Chuqin?! I do hope though that he keeps working hard and doesn't waste his talent or that he doesn't get bored with the sport... Would be a big loss!