Well....
"
However, Dr. Marc Siegel, professor of medicine at NYU Langone Medical Center and a Fox News medical contributor, pointed out a key limitation: "The researchers focus primarily on randomized trials, but most of the studies that have been done on masks are population studies," he said.
"There are very few randomized trials on masks.""
I'm not sure what that means exactly, but it seems to suggest the studies were "population studies" as opposed to actual" trials on masks". Seeming to suggest the data isn't actually aimed at finding out whether masks worked or not, but they looked and came to that conclusion anyway.
"The study authors did admit to some limitations and a risk of bias, including the low number of people who followed mask guidance and the wide variation of outcomes."
In other words, "masks didn't work" because people didn't give a fuck about wearing masks.
Try this, when I was a kid I got a bad eye, it's still bad, I have like 2/20 vision or something, I can only read really big letters. They gave me glasses and then I went back 6 months or a year or two years later, I don't remember, and the optician asked "do you wear the glasses?" I said "yes", he said "the glasses aren't working". I wasn't wearing the glasses.
Of course the glasses weren't working.