Earlier quoted context omitted.
I never thought of SV as a monoculture, when it comes to nationality and race (it does suffer from a bad case of groupthink though...) In SV you will find engineers, designers and managers from all over the world --Russia, China, Europe, etc., and when it comes to race you will find very large numbers of highly successful Asians and Indians. Likely more so than in other US industry.
What you just wrote didn't include black or hispanics. So now you have Black Girls Code.
For example, Google is quite diverse, the attendees at I/O were not.