Again, you are frankly wrong, and your spread of misinformation is damaging.
As I said in my post, masks do block droplet expiration (not "may" or "can".)
This is not me spouting off about something because I read an article somewhere. I have a Ph.D. in mechanical engineering from a top 5 graduate program in the nation, with an emohasis on fluid mechanics - you know, how things move in the air. I have 15+ years performing research related to the aerodynamics of speech. I am funded by the National Science Foundation to perform research on airborne transmission of the SARS-CoV-2 virus due to speech.
So no, I am not copying something I read from from other sources. I am stating the definitive findings of the research community and myself and my colleagues that are spending tireless hours researching these issues to provide effective guidelines and policies to protect public health.
So, excuse me if I react poorly when someone glibly and ignorantly claims that there is science out there that proves otherwise. 1) There isn't. 2) Your ignorance and denial on the matter literally puts people's lives at risk.
As I said earlier. You are correct that masks don't stop 100% of droplets. However, claiming that as a reason to forego mask usage is incredibly naive. Home made face coverings, depending on material and type, are anywhere from 20% - 80% effective at stopping droplet expiration. When you're trying to control a pandemic, those improvements make a huge difference, and drastically reduce infection risk. As previously mentioned, face coverings aren't just about trapping droplets. They also slow down the velocity of the droplets leaving the mouth, which contains their spread as well.
As I said earlier, I'd be happy to share with you scientific, peer-reviewed studies that demonstrate the science of how and why face coverings work.