Earlier quoted context omitted.
For smartphones!? I can only imagine that being more hazardous. Do you notice how we negotiate paths when we are walking? body language, with particular emphasis on the position of the head and eyes. Try this experiment: as you walk towards someone without a clear path to their left or right - walk with intent to go slightly one side with your eyes/head slightly to the other, usually your intent comes across far more…
I'm sure I'm showing my age when I say that I really don't like walking in cities (or anywhere really) with ear buds/headphones in. It's too much isolation from the environment and I'm just not comfortable with it. I imagine that's a minority option though and many will claim that the isolation really isn't a problem with the right earpieces. But I can only speak to how I personally feel.
I hate tech in the world, and meet younger people who feel similar. Personally I love the city, but if tech people take over I can be swayed to move to a fruit farm and never leave.