It's bonkers to me. I resolve so many of my own issues just... staring out the window, or staring at the ceiling.
I get that people are different, and we all have our different ways of going about things, but I just cannot imagine it is healthy to not let your brain "breathe" a bit sometimes.
I mostly sit with my noise cancelling headphones on, with no sound. And lately, I'm just moving towards not having them on at all when I'm not in meetings.
It's wonderful. There's a reason "silence is golden" after all. I actually still find classical music a bit distracting a lot of times even. A lot of the newer composers especially are particularly discordant.