Another reason is the world witnessing a non-democratic, non-US-styled political system able to attain such high degrees of development. I wrote of this before. The US has spent a lot of resources on preventing the world from adopting anything other than a US-styled democracy. The reason being that this democratic system allows anybody with money to buy out politicians in opposition parties. It's a gateway to corruption, allowing the US to control poorer countries and keep them inline with American interests.
Now when the world sees that democracy is not really necessary for high degrees of development, adoption of a Chinese-like political system would significantly reduce the capacity of Americans to meddle in foreign political affairs. Therefore, it is necessary (for Americans) to always present the Chinese as subordinate, below-average, and substandard in every metric.
We see the Americans usually fall prey to this type of American propaganda, but the question is: how much of the world will also fall prey?