I could not find a date for the study, other than it was reported on a Wednesday, but maybe someone could point me to the actual date. The report does point out that it conflicts with a number of other studies, but it doesn't say what those numbers are, suggesting that it is not the best scientific evidence, most current, or most definitive:
But it clearly points out that it does not contradict growing evidence that "masks can
prevent transmission of the virus from wearer to others," which is rather important during a pandemic:
At this time there is no law that prevents people from wearing masks or not wearing them. And when states enacted such requirements, they were seldom enforced, and I don't know of any proscribed penalties for not wearing them would have been. At least in Virginia where I live there never was any enforcement. And at this time, with the the less deadly strain of Delta, I have a hard time understanding the fuss.