> A - masks don't protect you, they protect others

This is flat wrong, but also a demonstration of how far the Back To Normal propaganda propagated, because it's a common misconception. They protect both; especially at an N95 level of filtration.

> B - what % of the population leaves the house when they feel sick enough that they should wear a mask?

For starters, ~40% of COVID infections are asymptomatic (and still carry the same aforementioned long-term risks).

B - a lot of them, actually. You see sick people going to work or shops all the time. And most them them see themselves as some kind of "pushing through it" tough hero.