I'm not a necklace

I saw this near the Brooklyn Promenade today, and found it funny. So many people are walking around with a mask, but it’s draped around their neck, or in their hand. I see some folks taking the mask off, but putting it on again when they get near other people, which I think is fine and makes sense. Having a mask with you, and still not putting it on when you’re around others is a bit silly, though.