The so called first world countries, its media, and its people, with good encouragement from certain sectors in the west, often confuse themselves with the world. US fears and dislikes loss of power and being irrelevant in Asia Pacific. The public digests news from these media houses and resonate the same elsewhere.
Among the state and non state actors, China is deeply disliked by global journalists too. It is also deeply disliked by Human Right Propagandists/Upholders, and the so called "global civil society on the internet". The problem is that these people have an ultra large impact on the perception because these are the people who control media, and a general person's access to information. They have abject monopoly over access to knowledge, and are deeply ideological. So much so that, these people are often found lobbying the United States and on the internet forums for policies that may harm the world. But they have huge power in Western discourse, and if they get pissed, they will start a whole ideological parade against their perceived nuisance. For US, it is simply their loss of influence that they are worried about.
The biggest people, and the most vocal, which leads to this perception, are the Global Civil Western Society, who just can't tolerate a state like China's to succeed. It is against their almost fanatically religious form of worship for some ideas, systems, and ideologies most of them tend to be under the guise of pro humanitarian but in reality is borderline jealousy and the fear of losing out. This also should be read in tandem with the fact that this is the very same society which supports the NRA, African American suffrage etc.
A similar phenomenon happened in the 1980s and 90s with Japan. The United States, not the world, was desperately concerned that Japan would not just pass over them in the future, but had already done so economically and culturally. The American mindset is extremely fickle, superficial, paranoid, and shortsighted when it comes to the possibility of foreign rivals. They just cant stand the very thought of competing in a global economy.