Let’s look at it this way.
In NYC people here started to not wear masks early summer, more cases of C19 reported, hospital stays more prevalent. City issues a mandate to wear masks, cases of C19 go down.
No peer reviewed but there appears to be something there.
Again - wearing a mask is to stop us from giving the virus to someone else. The more barriers for the virus to cross the better we are for it.
Even more important, stopping the spread so the virus can’t mutate is now a focus. Being vaccinated is just part of the battle.
Curly and the others don’t seem to want to accept that fact.
Stop the spread - wear a mask.