It's false to suggest that we can't develop an understanding of how people arrive at their conclusions.

If you work in the field of Marketing, PR or Communications for just a few days, it becomes pretty clear how people come to believe what they do.

What is 'impossible' - is for a material portion of the population to arrive at the specific conclusion that 'XYZ drug is beneficial for ABC disease' without having popular sources for that information: they have to hear it or read it somewhere. The greater the voice, the greater the credibility of the source in the mind of the recipient, the greater the likelihood that information becomes sticky. While there are other factors, the primary vehicle of the message is paramount. It's also measurable.

In fact it is your statement that miscommunicates the ongoing nature of the pandemic:

While COVID may linger for some time, there is no evidence as of yet that it will remain endemic - we don't know that.

Also - pandemic itself will definitely pass - as all pandemics in history.

COVID may or may not linger around in one form or another, but we will, at some point, back off from public health emergency status.