You have to look at everything surrounding COVID in context. The most important context was that prior to COVID, Trump was obviously going to be re-elected. None of the world-ending catastrophes that everyone said would happen under him, did, in fact we got a lot of good out of his administration. The economy was great, taxes were low, gas prices were low, etc.
But then COVID happened, and finally, the opposition saw their opening. If they had any hope of Trump losing reelection, this was their only chance, and so every single day they did whatever they could to blame everything on Trump and only Trump, and did whatever they could to come to the defense of any organization or entity that Trump assigned blame to (WHO, China, etc.), and they also did whatever they could to trash anything that looked like it might help reduce the effects of the pandemic prior to the election.
People on a particular side of the aisle were "TERRIFIED" that the vaccine would be released before the election.
You'll recall, for example, that many of the people and organizations that shame everyone as "anti-vaxxers" for being wary of the vaccine, did that very same thing just prior to the election, spreading FUD (including Biden himself):
https://www.cnn.com/2020/09/01/health/eua-coronavirus-vaccin...
Ivermectin, a life-saving drug WHO-listed essential drug (found ineffective for most for COVID) that has a side-effect profile close to that of the antibiotics we as a country receive so many prescriptions of like candy, was referred to as "horse paste", and do you know why some idiots were resorting to getting the animal kind instead of the human kind? Because the media and the establishment treated this relatively harmless drug as something evil and so people who are inclined to believe everything is a conspiracy, had that further reinforced in their minds, so they did whatever they could to seek something that the establishment was actively trying to keep from them.