Two compelling case reports also suggest that masks can prevent transmission in high-risk scenarios, said Chin-Hong and Rutherford. In one case, a man flew from China to Toronto and subsequently tested positive for COVID-19. He had a dry cough and wore a mask on the flight, and all 25 people closest to him on the flight tested negative for COVID-19. In another case, in late May, two hair stylists in Missouri had close contact with 140 clients while sick with COVID-19. Everyone wore a mask and none of the clients tested positive.
I don't have time to read over every thing you listed got to get to bed.
Posting an article about some guy flying from China to Toronto does not prove how effective a surgical mask is. What was his age? It has been proven that often older people who are positive are not effective at spreading covid-19 compared to a younger person. Meaning if the guy was not producing virus to spread, he did not even need to wear a mask.
Same with the hair dressers.
Again what it comes down to and should be quantifiable. Is to find a test subject who has covid-19 who is asymptomatic and is actively shedding the virus. Collect their breath with mask on, with mask off a bunch of times with a fresh mask each time. Then determine how effective the mask was at blocking their output of Covid-19.
The same could be done with a cloth mask too for comparison.
If I remember correctly around 85% of reported USA covid cases people claim they were wearing their masks properly on the CDC website, I can find the stats later.