Common sense says that masks help prevent the spread of the virus. Granted, common sense may very well be incorrect here, but most people will follow their common sense, especially in a case where there are such strong opinions on either side.
So if you think you can try to convince people not to wear masks while not causing more machlokes, you’re in for a big disappointment.
P.S. Your point #1 is simply not true for new masks, look it up. Also doctors have been wearing masks for many years. Why haven’t you said anything until now?