Youtube is owned by Google. Google has been censoring information in the US and globally for years. As has been talked about in the news, they have worked with communist China to develop a fully censored operating system called Dragonfly. This shows you what kind of values and ethics the leaders at Google really have. In short, they are not who you've been led to think they are.
There have been many examples of (mostly) conservatives being censored on Youtube, Google, FB, and Twitter by the tech overlords. Youtube has decided that any Covid content posted must jive with the WHO party line. WHO does not promote the use of HCQ. If WHO has opinion A and a doctor (or anyone) posting on Youtube has opinion B or data supporting opinion B, Youtube has decided that this is "misinformation" and needs to be removed for our own good. Let that sink in. If you don't think like or agree with the globalist organization WHO, that means that you are dangerously misinformed and therefore are not allowed to share your thoughts with others. It is insane. It is censoring. It is fascist. Not to mention the fact that the WHO themselves have contradicted their own statements and reversed their own recommendations and forecasts over the last few months. Youtube has also removed videos of two physicians (Dr Dan Erickson and Dr Artin Massihi) from Kern county, CA who held a press conference to discuss their own Covid data and their opinion on reopening the economy in Kern county. Because it contradicted "the party line," it was removed from Youtube.
Conservatives have been complaining for years that their content is being censored, removed, followers ghosted, or algorithmically hidden. Certain "trigger words" are purposefully not spoken or put into video titles, because these would automatically result in removal. It is suppression of free speech. The example that you provide illustrates beautifully how Google operates as a propaganda machine. Science is the process of observation and analysis. Science should be apolitical. Science should be open to interpretation, review, debate, acceptance or rejection by individuals. Perhaps this has opened your eyes to how Google and Youtube truly operate and how Big Science is controlled and manipulated to serve a certain narrative and to benefit certain people. The globalist agenda is the master that Google and many others serve with little or no concern for truth, accuracy, ethics, or American values.