Whenever I see people disinfect their hands at every opportunity and whatnot, I think about how they're weakening their own natural immune response and setting themselves up for a bigger downturn when they (inevitably) do catch something

Indeed. That's partially how superbugs got created as well ;)

Yup, voluntarily association in communities, and letting reality demonstrate the veracity of claims would be much better, as the most free and moral option. Voluntary non-harm creating interactions for the win!