It's not about age. It's about ability.
A lot of the people I build web pages for are poorly educated. The text we use for web is written for people with an eighth-grade education. Print material is fifth-grade.
People in the SV bubble can't imagine that there are tens of millions of people in America who cannot understand how an SPA works.
These people are invisible, even as they ladle out the food in the Google cafeteria, and polish the chrome in the Meta lobby.