This is WILD. I've been working in a restaurant in Pittsburgh, PA for over two years now, and while we've internally been very safe and careful about cleaning and mask protocol, I've watched every type of customer come in.
However, in PA the mask mandate is still very active (thankfully) and while we have definitely had customers try and fight us on it, we have that as a fallback. I can't imagine that I'd have lasted this long if people could come in without a mask at all.