This is my fear as well; whilst i would love nothing more than an Ubermensch race of Chinese colonising the stars, there's still so much we don't know about gene editing, what downstream effects this could have; hell, we still don't yet know the full impact of the survivors from Hiroshima and Nagasaki and their descendants on the germline.The Americans are welcome to try to do that. Indeed, they are welcome to try that and unintentionally create a whole population of cripples.
Secondly, and given the nature of the internet and western society, why do ppl assume a western capitalist society is going to push for six feet tall, blonde haired, blue eyed supermodel geniuses when the more gritty reality is furries and body modification.