When you assert that someone is a "science denier" for not wearing a mask, you try to automatically elevate yourself over that person both intellectually and morally.
From my perspective, not wearing a mask could mean many things including that you have already gotten over the virus and are incapable of spreading/contracting it, or you are capable of weighing the risks and making your own decisions.
People who automatically buy wholesale anything the WHO/CDC/other government agencies are selling them suggest that they are less capable of thinking for themselves. And they will howl you down for not joining them in their slurping it down.
I wish both businesses/proprietors would join in unison to promote what's best for everyone and listen to one another. Maybe they could build each other up instead of tearing each other down. If their ideas don't align, maybe they could still be respectful of one another. I refuse to believe that we have gone too far societally to be unable to relate peacefully and respectfully.