China regularly conducts military, even live fire, exercises in the waters the South China Sea and surrounding waters, fishes and uses these water illegally, it helps Russia with its war against Ukraine, has provided assistance to Iran and continues to do so, has set up illegal policing units inside of other countries, conducts regular espionage, influence campaigns, propaganda, and infiltrates the political structures of other countries, and more. Unlike much (though not all) of what you blame the US for, these are all direct decisions by the state China rather than developments in its respective market by private actors.
China's hostility is not hypothetical. The US's hostility is not universal. I think my point about ignorance or propaganda is proven by your statement.