Legally there is no requirement. The issue is that people are getting considerably more stupid than they were before. At this point they can't reliably make a hamburger and can barely drive. Whether this is from oxygen deprivation from the mask, or brain damage from the vaccine, or something else, I can't say. But idiocracy has arrived here (and to the rest of Mexico based on my last trip to Cancun) and so I would rather not leave home.