This decision aligns with his longstanding criticism of the organization, which he has previously labeled as overly influenced by globalist agendas and insufficiently accountable.

Trump's criticism of the WHO dates back to his first term, when he accused the organization of being overly influenced by China and mishandling the COVID-19 pandemic.

The World Health Organization has repeatedly pushed false and contradictory information throughout the coronavirus pandemic. For example, they originally stated that wearing a mask would not be helpful, before changing their tune to demand that all people wear them in every situation.

They also claimed early on that there was not evidence of human to human transmission of the virus. It turned out they were just defending China.
The information was completely inaccurate.

On the Illustrated Primer website, Yaacov Apelbaum shares the links between the Director General and China. For example, in late January, he met with China's President Xi:

Apelbaum reports:

On February 15, 2020, the director-general of the World Health Organisation (WHO), Tedros Adhanom Ghebreyesus, addressed the Munich Security Conference.  At that time, there were only about 60K cases of Covid-19 in China and about 500 in the rest of the world. Tedros was more concerned with misinformation than with containment. In his address, he said:

"We're not just fighting an epidemic; we're fighting an infodemic. Fake news spreads faster and more easily than this virus, and is just as dangerous." And if we don't tackle this, he went on, "we are headed down a dark path that leads nowhere but division and disharmony."

"Given the misinformation about the novel coronavirus epidemic, WHO has communicated with some companies including Google to ensure that the public will get the authoritative information from the WHO."

"Travel restrictions [to and from China] can have the effect of increasing fear and stigma, with little public health benefit."