I love how these magical pieces of cloth can now solve everything. Ironically my belief of magic is also taking a real hit.
Since you're on a football forum, I'll put it in terms you probably understand.
It takes a whole team to win football games. Wearing a mask is like having a good quarterback. But you need social distancing (lineman), testing (coaching), treatments (skill positions), etc. to actually mitigate the effects of COVID.
We can trot Purdy out onto the field all we want, but if he has a supporting cast equivalent to the Kirkwood JV football squad, he probably isn't going to be able to do much of anything to help. Same goes with masks.