It seems to me that ethnocentricity is rampant in the bay as a sub cultural norm. For example the Bay Area is big on tolerance, but if you choose to voice political concerns that challenges the area’s popularity you will be silently shunned and ignored which counter-intuitively is intolerance. As a solid example review the firing of Brendan Eich from Mozilla. This kind of self-satisfying inward-facing deceptiveness allows any manner of isolating justification, such as ageism. In other areas wisdom and experience are rewarded commodities.
The Bay Area is also stupid expensive. You will make less money elsewhere but be instantly more wealthy. I would need to multiply my salary x3 to live the same in the Bay Area with a House half the size.