I wonder when this was filmed. Here in the States, everyone I know has their face buried in their phone, playing with it, texting, talking, calling. I'm that guy who smiles and always makes small talk in short, tight situations like that. I was in my optometrist's office the other day, a middle-aged lady asked me what I was there for and I made a bad joke: "The last eye doctor I went to was getting old. I knew it because instead of asking me to sit down and look at the wall, he asked me to bend over and cough."
She grimaced and then told me she was 46 years old out of nowhere. I figure everyone not buried in their phone is likely too tired to talk, or more likely as Henry Thoreau wrote: The mass of men lead lives of quiet desperation. What is called resignation is confirmed desperation. I wrote a paper in high school in response to his Civil Disobedience and Essays titled: "Most men live lives that are desperately quiet." Back then I thought I was clever.