Whether or not you are going to wear a mask, shaming someone for doing so is as bad as shaming someone for not wearing one. The only reason people are wearing them is because they are trying to protect, be considerate, and/or simply do the right thing for their fellow human beings. Whether or not that is misguided isn't for me to say because watching a Youtube video didn't make me an expert on my own confirmation bias or an infectious disease expert.
I had a lady wonder out of her house and ask me why I wasn't wearing a mask while I was cutting line in an overgrown backyard. I just smiled and said "I'm good, but you stay safe, ma'am." She smiled, wished me a good day and went back inside. It cost me zero pride or integrity to be polite to someone that is likely worried because, like all of us, they are being hyped to the point delusion by an overbearing media, and they actually have legit at-risk family members so they are just being over zealous worry warts.
I've probably been called an a-hole by more folks than some of you even know and even I'm not going to be rude to somebody for buying the hype (or possibly believing the truth) about this whole pandemic and precautions regarding PPE. If someone is legit rude to me, I'll deal with that then and there, but I am going to at least try to act like the damned civilized Southern gentleman I was raised to be.