It surprises me very much. I understand that many in tech may not have close friends from outside tech, but family? Do so many people are second-generation technologists, so they don't end up in those uncomfortable situations where they avoid the topic of salaries near their siblings, parents, or SO?
It's interesting to see a little from the other side too. I'm in tech, but not "SV pay" scale. Meanwhile many of my friends are in tech at the more SV-like pay scales. It's sometimes surreal the things they talk about and afford. I usually just smile and nod and many of the not-close friends aren't even aware (I presume) that there's a difference.