1-(Ok I& #39;ll ask the somewhat obvious:
What makes so many people assume those who got coronavirus get it/got it when they weren& #39;t wearing masks? Not very scientific of them.)
Interesting.

2-I don& #39;t think I know much more or less than average about mask impact, but if it were that simple, we& #39;d all wear masks and be able to live otherwise normal lives at school, work, etc.

3-I don& #39;t think any scientists claim masks are always effective at preventing coronavirus, and they differ on how effective they might be. And I don& #39;t think any scientists recommend one wear them all the time.

I certainly am not trying to create controversy but I will tell you some prominent academic and govt. scientists working directly on coronavirus-related matters do not generally wear masks or isolate (unless of course they are in a place that mandates).