Mask mandates were mostly introduced after the first wave of deaths. And there's apparently no second wave in most places, even when the tests indicate a second

Mask mandates were mostly introduced after the first wave of deaths. And there's apparently no second wave in most places, even when the tests indicate a second wave of positive RT-PCRs. So - no. Mask wearers aren't going to experience any difference in death rates in the vast majority of places because COVID deaths have already ended. And of course, when they were occurring, there was a lot of bad reporting there which conflated people who were dying anyway with people unexpectedly killed by the virus.