Because Trump, and Trump's chaotic, venal, amoral, anti-American, anti-small-d-democratic policies, are the Enablers-in-Chief for:
plutocrats suggesting those like Xi and the Chinese Communist Party exercise something less than dictatorial control over the Chinese people
isolationists eager to throw the Syrian Kurds under the Turkish bus (because Trump Towers Istanbul)
conspiracy theorists who think the story of the 2016 election was Ukrainian interference on behalf of Hillary and those giving Putin a free hand in Russia's "near abroad"
haemmoraghing US prestige and influence in the Middle East, Europe, the Korean penninsula, South Asia, Venezuela and around the world
to the point where NBA players with Chinese shoe endorsements can support Beijing vis-a-vis Hong Kong with zero fear of repercussions
unless something changes, and that soon, America's days as a world power are numbered.