I just read that link and it is just packed full of misinformation and massively cheery-picked links listed at its bottom to help support that misinformation out of all the scientific studies the vast majority of which conclude that waring masks DOES significantly reduce the incidence of spread.
The link says in the second paragraph;
My wife and I dined out last night in a very empty restaurant and the young waitress was required to wear a cloth mask. I asked her how she was doing with the mask and if there were any side effects. She related that was consistently short of breath (when away from the table, she lowered the mask below her nose) and that she had actually passed out because of it a few days earlier, taking her straight to the floor."
This is NOT meaningful evidence that wearing masks generally makes people short of breath or endangers their health.
My bother and I, who is relatively healthy (despite me having a rare form of a disease of the blood vessels), and my disabled mother, who as some serious preexisting medial conditions including significant heart and lung damage and a blood disorder, have often wore masks and neither of us have ever had problems with breathing or passing out at a result. That doesn't by itself mean that masks couldn't do that no more than the above claimed incidence of breathlessness, which I suspect is just a propaganda lie and possibly from a Trump supporter, means that masks can do that.
Now, shall we see what the current general consensus is among the experts, you know, the people that actually KNOW what they are talking about, shall we? ;
"...health experts say the evidence is clear that masks can help prevent the spread of COVID-19
and that link then explains just some of the evidence;
"One category of evidence comes from laboratory studies of respiratory droplets and the ability of various masks to block them. An experiment using high-speed video found that hundreds of droplets ranging from 20 to 500 micrometers were generated when saying a simple phrase, but that nearly all these droplets were blocked when the mouth was covered by a damp washcloth. Another study of people who had influenza or the common cold found that wearing a surgical mask significantly reduced the amount of these respiratory viruses emitted in droplets and aerosols.
But the strongest evidence in favor of masks come from studies of real-world scenarios. “The most important thing are the epidemiologic data,” ... Because it would be unethical to assign people to not wear a mask during a pandemic, the epidemiological evidence has come from so-called “experiments of nature.
A recent study published in Health Affairs, for example, compared the COVID-19 growth rate before and after mask mandates in 15 states and the District of Columbia. It found that mask mandates led to a slowdown in daily COVID-19 growth rate, which became more apparent over time. The first five days after a mandate, the daily growth rate slowed by 0.9 percentage-points compared to the five days prior to the mandate; at three weeks, the daily growth rate had slowed by 2 percentage-points.
Another study looked at coronavirus deaths across 198 countries and found that those with cultural norms or government policies favoring mask-wearing had lower death rates.
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.