Really? You sure about that? Or are you guilty of confirmation bias?
What about these peer reviewed research that shows that wearing face mask are effective in preventing the transmission of Covid 19? This was from an exhaustive 30 second search of the peer reviewed literature;
https://www.sciencedirect.com/science/article/pii/S1477893920302301
https://royalsocietypublishing.org/doi/abs/10.1098/rsif.2009.0295.focus
https://www.bmj.com/content/369/bmj.m1442.short
https://www.bmj.com/content/369/bmj.m1435.short
https://www.sciencedirect.com/science/article/pii/S0140673620311429
https://www.sciencedirect.com/science/article/pii/S0163445320302358
https://www.sciencedirect.com/science/article/pii/S2468042720300117
Now these are all current studies and I would challenge to answer the criticisms of the older studies you linked that they are underpowered (the sample size were to small to answer the question) and that they fail to account for viral adherence.
So even though there is certainly a lack of scientific knowledge on transmission rates of COVID 19 the current peer reviewed literature is indicating that community wide use of face mask can reduce Community wide COVID 19 transmission rates by approximately 50%.
What do you have to say about that?
I think the contradictions to your position makes it abundantly clear on two things. #1. The science that wearing face masks is not effective at lowering transmission rates of viruses like COVID 19 is anything but conclusive as is indicated by the current peer reviewed research and #2. You suck at research.
What exactly do you dispute in the article I posted? Can you copy n paste the item you dispute into a quote here on this thread and explain why you dispute it? No lefty has been able to do this yet, and none have even been able to demonstrate that they got past the headline. I'm still waiting for a lefty to pick out a couple items from the article to quote here and pick them apart, but apparently no lefty can find any faults in the content of the article.