-And the comment (as linked and now also reprinted) explains the simple fact that the bacterial growth indicates droplet expression and spread: pointing out that virus won't grow in agar requiring live cells to infect.
"I see. So the flu virus, Rhinoviruses, and even SARS are airborne viruses and somehow corona isn't. Yeah, right."
...and that masks help prevent "...the wide expression of respiratory droplets (which are charged with viral and bacterial mater.)
-I really think Mark Doran has hit the nail on the head:
"...Stop pretending that rationality has any part in motivating the anti-mask crusade. This is entirely an issue of fruitcake libertarians having ego-boundary problems."