If you dig into it a bit, you'll see the claim that Tedros is some sort of manchurian candidate is based on him having given a speech at Peking University and his reiteration of the WHO's support for the One China policy.
This is what the article they cite in support of the One China policy statement actually says:
> In a meeting with Li Bin, minister of China's National Health and Family Planning Commission, Tedros said the UN agency will properly handle the Taiwan-related issues based on the resolutions of the UN General Assembly and the World Health Assembly, the WHO's decision-making body.
https://www.cfr.org/blog/who-and-china-dereliction-duty