The point is those masks do not protect the owner from others having potential viral/bacterial infections. They do protect (to a degree) the others from the mask owner if he/she is infected with bacterial infection, but not from the viral one. That is why a surgeon wears mask during surgery, and his patient does not.
The point is when your wife could die and the oncologist tells you to wear a mask, you do.
A lot of BS and theory gets tossed out the window when you have a little experience.
So many people are concerned about other’s behavior. I stopped giving a hoot what anyone thinks about mine. You don’t know me, or the reasons why I do stuff. And unless I am asking you to change your behavior, I am not sure why it matters so much you.