Earlier quoted context omitted.
One of the first proponents for hand washing and hygiene during medical practice wound up dying in a mental asylum. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7240806 What's considered normal socially is not always what's supported by the evidence at hand, and sometimes what that supports is well outside of the acceptable range of discussion or behavior at the time. Are you truly concerned that this person has made…
What you just demonstrated is called Survivor Bias or Survivorship Bias: https://en.wikipedia.org/wiki/Survivorship_bias what about all the people who challenged what was "considered normal socially" and actually were proven wrong? One never hears about those.
There are not many of those, because of herd mentality. (Edit: I mean Normalcy Bias, thanks "notabee")
If a person is unusual enough, they are dismissed as cranks without any sort of proof required.