I literally quoted the paragraph, where they said that there's no evidence to suggest that the wearing of masks by the mass population has any potential benefit.
They didn't say "it helps, but we're unable to call wallmart and buy all their stock, so we're asking you not to buy them, so we can", they said that there's no evidence to suggest that the wearing of masks by the mass population has any potential benefit... those are two different things.
The very next statement by Dr. Ryan "There also is the issue that there is a massive global shortage, and where should these masks be, and where is the best benefit? Because one can argue there's a benefit in anything, and where does a given tool have it's best benefit? And right now the people who are most at risk are frontline health workers [...]"
The follow up statement is also very emphatic that this is about mask allocation due to constrained supply. I don't get why you're trying to ignore the very clear context of the statement.
There was evidence of the effectiveness of masks. They chose to diminish/ignore that evidence because it was inconvenient to protecting the supply of masks.
There were two studies circulating around that time. One of passengers of a bus and another of a restaurant. The bus one found that the passengers wearing masks did not catch the virus and many of those that did not wear masks did catch it. The restaurant one found that people in the flow of AC air caught it and those not in it did not. That meant that it was airborne and there was some evidence suggesting mask effectiveness.
Why should you listen to the CDC, WHO, etc… when there is a better predictor of reality?
They didn't say "it helps, but we're unable to call wallmart and buy all their stock, so we're asking you not to buy them, so we can", they said that there's no evidence to suggest that the wearing of masks by the mass population has any potential benefit... those are two different things.