That's quite a reach and a bad take.
I've only been in the full-time tech industry for about 3.5 years.
Before then I was working hourly jobs to make ends meet, including working half time or more while studying full-time in college, working during high school, etc. This so I could pay rent and tuition with minimal, if any, aid.
I couldn't even afford a car until after graduating from university.
I was walking or taking public transportation everywhere prior to finally getting a car.
I won't disagree that people in SV can be snobby but let's not jump to conclusions here.