This comment is an indirect appeal to nature: protecting yourself from exposure to pathogens is better than low level exposure if your intention is to not fall ill. I've seen a number of ill-looking grocery store employees (coughing, sneezing, sniffling, the works) before, during and "after" COVID.

Wearing masks does not compromise one's immune system: it just shields you from exposure to respiratory bugs. Kids are getting hammered because people have relaxed on wearing masks, so they are now more exposed than before.