I was in China last month where mask-wearing is frequent and not stigmatized. They had a surge of Covid cases, so I wore a mask on public transport. It’s a total no-brainer there.
Back in Canada, I don’t wear it as much because I’d be in much less trouble if I caught it here. Still wore one when visiting an aging relative in a medical facility.
Zuck clearly put it there as a joke/Easter egg. I know it’s weird, but dystopian multibillionnaires whose life’s work undermines the very foundations of democracy around the world can have a (bad) sense of humor too.