Wow, what a story. Add sound to create a sense of privacy. It is incredible what some people will come up with. I now wear my noise cancelling EarPods when I walk the dogs and go on bike rides. The lower noise level relaxes me… while the background is more or less white noise… it kind of “jacks me up”… not relaxing.
One of the most profound improvements in my professional life was getting Bose Quiet Comfort headphones (I flew over 250,000 miles a year). I would put them on when I got to the airport and take them off when I got to the hotel at my destination. Huge improvement in my life! Lowered stress. Most of the time I had nothing playing… just noise cancellation.