So it is the same effect as with mandatory bicycle helmets, where the main contribution to decreased trauma rates seems to come from many people refusing to rid

So it is the same effect as with mandatory bicycle helmets, where the main contribution to decreased trauma rates seems to come from many people refusing to ride the bicycle at all, missing on all the goodness it brings. I even wonder if most mandates' (helmets, face masks, seatbelts, all kinds of licensing, etc.) effect is confounded primarily by them serving as "red tape". I'm guessing no one is really interested in finding this out.