A friend of mine that lives in NYC recently commented that people not wearing masks are getting covid there, again. But that's completely anecdotal as far as I know. However, given the population density in NYC it would be understandable that any airborne communicable illness would spread more easily, there, among those who choose not to wear a mask.
After all, many Japanese people have been wearing masks, in their bigger cities, since long before the pandemic, for that very reason. It's just common sense after all. And in the future, I will always wear a mask on airplanes. Because I know from past experience that flying in planes is a very easy way to catch colds, flu, and other viral infections.