> Yet this reimposition of government mandates is entirely unjustified, because, thanks to widespread safe, free, and highly effective COVID-19 vaccines, a significant COVID externality no longer exists.

WTH?

> Set aside for now the debate over whether vaccinated individuals can spread the Delta variant.

That's the whole effing point! Vaccinated people, when infected, can transmit!

Whether masks work or not is one debate. But we're not just trying to save vaccinated individuals. We're trying to stop the spread, and more variants.

Vaccinated people can and do spread the virus. "Vaccination," with the current variant(s), is not a good argument against masks.

Defense in depth.