[adventured]

That's not quite correct. There are very obvious, very large common intellectual & political interests in Silicon Valley:

Equal representation of women and minorities in tech. Wage gap as a result of discrimination. Unlimited low skill immigration; immigration amnesty. Environmentalism, global climate change. Gay rights. Drug legalization, ending policies of mass incarceration.

Those topics all have overwhelming support in SV.

[tempz]

These topics all have overwhelming support in local media, PR and marketing copy, in other words in the official ideology.

The actual people are not much different than anywhere else in the US. But they quickly learn to provide lip service to the official ideology, especially when seeking employment or acceptance in social media-mediated groups (and there are very few that are not.)

The real problem with computer techies is that they tend to be more sycophantic to the prevailing power than other profesions.

[toomanybeersies]

It seems that a lot of the proponents for relaxed unskilled immigration are also the same that decry the use of H1B visas.