Comment by jasonfarnon

You also see the behavior in the middle of the woods on a hike, or as the article mentions at upscale cafes. The whole point of the article is the near universality of wearing airpods. So a comment dwelling on US urban subways tells you more about the comment-writer's preoccupations then any sociological insight. And a top comment tells you mainly something about the preoccupations/demographics of the site.