The whole issue of spread prevention via aerosol by "paper" masks is a distraction. I don't think (did not say know) any studies support that thesis. They were intended to MITIGATE, not necessarily PREVENT the spread of droplet borne virus to OTHERS. Some choose to ignore or confuse that. Essentially moot with the advent of vaccines. Speaking of vaccines...
Why-Yes seems to misunderstand, or purposely jumble, the difference between "Experimental" and "Emergency Use Authorization". This link may help:
https://www.fda.gov/consumers/consum...ments-covid-19
It all comes down to risk vs benefit. I think the benefit outweighed the risk.
Those that don't believe in the benefit of the vaccine shouldn't include vaccinated people in their herd immunity calculations to justify elimination of safeguards.
I'm not a lawyer, but the PREP Act seems to provide some liability protection for manufactures, providers; but also provides some redress for injured parties if funds are allocated. No clue if funded or not.
Bottom line, without the EAU (granted under Trump administration) we may not have a vaccine at this point in time and no "shots in arm".