The absence of human-generated sound is not silence, it just means a baseline level of noise generated by nature, and those natural sounds actually may strike us as more intrusive than the peace and quiet of our own homes.

I always notice this when I go camping in the wilderness and take the headphones along. I listen to classical music and ECM jazz with huge dynamic range, and you need total silence in order to hear the pianissimo passages (it's not unusual for modern repertoire to have dynamic markings down to ppppp). But that total silence is really hard to find in nature where waves lap on rivers, birds chirp, the wind blows, etc. The man described in the linked article appreciates those natural sounds, but when I’m in the tent I would prefer to hear my music instead, and I miss my own home where I installed soundproofing and anti-reverb foam.