>>>In fairness, the Lord God Fauci knows that people can't be bothered with all those pesky details - thus the idea of wearing two masks.
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>I believe the perceived touch risk is virus particles on the outer surface whether there's 1 mask or 5. Perhaps more than 1 mask will attract fewer particles. But if it's true that humans unconsciously touch their faces over 20 times per hour, it takes significant training/discipline not to touch or adjust that outer surface, especially if you wear spectacles. As you point out, these people need to decide whether the mask is for self protection or protection of others... and they need to be warning their audience that you can't scrumple the mask in a pocket until next time it's needed and then think you're safer than Karens who refuse to wear one. It will be interesting to see what happens if one of the mask refusers is taken to court...

John, CDC report showing that mask use made not a huge difference in reducing virus spread, about 1.8% reduction but with a variance between 2.8% and 0.7% which, on the lower end, is almost none/meaningless.

Page 2 - TABLE 1. Association between state-issued mask mandates and changes in COVID-19 case and death growth rates† — United States,
March 1–December 31, 2020 - PDF: https://www.cdc.gov/mmwr/volumes/70/wr/pdfs/mm7010e3-H.pdf