Was just in SF area. It was not ruined. It was a multi-cultural city with a thriving immigrant population in which the city realizes is part of what makes the place special and a thriving hub of the 6th largest economy in the World.
Culturally the one thing that surprised me...kind of like not seeing squirrels in the trees in Europe ... I never saw any gun stickers in any pickup truck windows. I saw a few homeless people but no more, no less than NYC, Washington, DC or Detroit my urban frames of reference. There was one guy on Fisherman's wharf who was hawking Trump merch. The city was efficient, well-organized and clean.