Few things to be said here.
First, people are, in general, really bad at navigating traumatic events and situations. Now if you've been through some real Sh!tty situations in your past, you're better able to navigate new ones, but don't make the assumption if you are able to navigate them, they can as well. Giving them 10 different sources of information including things like 5G being to blame and other disinformation can create more problems than its worth including riots.
Second, The WHO has been flogged thoroughly by the US government in the States and rightfully so given the misleading statements that were made at the onset about the ability of china to keep the virus contained. You look at the WHO ARCGIS webpage for Covid and it's got outbreaks with 30 people in a circle the same size as the US outbreak; there's some degree of obvious derision by the WHO for the west in general and the US in particular which in my estimation, factored into what they communicated. At this point it's hitting every country, so every country is going to request a reform and furthermore every country is going to be look for other trade partners aside from china.
Youtube at this point is an international utility so they are siding with an international firm; in the short term this is wise. Long-term, you can expect a US institution to take over as the authority as the vast majority of medical research worldwide is done in the US.