I will give you that if everyone wore an N95 mask fitted properly 100% of the time, it would have some effect in stemming viral transmission. But cloth and surgical masks do nothing and were never designed for that.
You are big on RCTs, fine. As researched by a team from the University of Hong Kong, 10 RCTs on masking showed zero effectiveness in stemming viral transmission. Two additional studies from Denmark and Parris Island showed zero effectiveness in stemming specifically Covid.
These are the actual RCTs, which you required for HCQ+. To be consistent, you must accept this as fact that multiple RCTs show mask wearing to be ineffective in stemming viral transmission.