Alot of those people imitate the culture and creativity from San Francisco's once diverse population until it's just become another vapid rendition of a once vibrant city.
Look at clowns like "Lil Dicky" for example that exemplify the notoriety of the idiocy that is confused for San Francisco culture.
The worst are the police from the MidWest and other racist places where they openly shoot minorities (Asians, Blacks, Hispanics, Latinos, etc...) then they are assigned to places like San Francisco, Seattle, Silicon Valley, Portland, etc... to gentrify the area. They have been working a lot with the white supremacist "techbros' that plague San Francisco, such that when altercations occur, the police will abuse the minority every time. They even laugh about it too. It's sickening.