Earlier quoted context omitted.
There's no real alternative: you either stare at people's shoes, or the ceiling, or you stare at your phone. The trains are crowded so it's basically impossible (during those times of the day) to look anywhere else, and staring at people is rude. Looking out the window isn't practical either: the seats are facing inwards, and there's people on the other side blocking the opposite window.
I'm sure there are alternatives since mass transit has been around since before phones. The belief that the only option is to stare at a screen is a little bit depressing actually. I am not saying I do not do similar things, what struck me was that most people did not seem to have any awareness of what was going on around them. I would observe people on the train and not once did anyone look up. I guess the world out…
Of course: before phones became common, everyone read books on the trains. Why exactly is this depressing? Now, instead of reading manga in a physical book, they're reading manga on their phone.
>what struck me was that most people did not seem to have any awareness of what was going on around them. I would observe people on the train and not once did anyone look up.
When you're packed in a crowded train where most people are standing and there's barely enough room for everyone, "observing people" just isn't something you do. Most people aren't tall enough to see anything anyway.