Anything that happens in San Francisco is eventually exported world wide, just like negligence on street crime, etc.
I assure you San Francisco is significantly less influential than you make it out to be here. Local trends in SF don't even propagate well to the East Coast of the US.
Or Los Angeles, what's left of it.
I beg your pardon(s), respectfully I think you are all wrong.
Which makes none of us caring even funnier. To the extend that the east coast even thinks about San Francisco at all it's typically viewed as a roadmap of how to fuck up everything all the time.