> It's lefty paradise.
Ok, let's get into some definitions and corrections.
SF isn't a lefty paradise. It's a liberal paradise. "Liberal" has pretty much become synonymous with "neoliberal". And by "liberal" i include the vast majority of Democrat and Republican voters (certainly as neoliberals). Liberalism is really about aesthetics and is performative, like how racism famously ended when we elected a black president or misogyny ended when we appointed a female Supreme Court justice.
The primary differentiating factor between Democrat and Republican voters are social issues but here's why it's aesthetic/performative. Democrats might tend to self-identify as being against racism but, as you see in the Bay Area, will tend to adamanatly oppose any effort to build more or cheaper housing.
The entire political spectrum in US politics still works at the behest of corporate interests, first and foremost.
My point here is that you cannot separate economic from social policy, which is why such labels as "fiscally conservative, socially liberal" are fundamentally flawed.
If SF were truly a "lefty paradise", it would attack the core issue of homelessness and poverty (and the resulting crime), which is housing. But instead, you have superficial/aesthetic policies aimed at reducing the appearance of homelessness (eg clearing out homeless encampments).
There is no meaningful "lefty" or "leftist" movement anywhere in the United States. What many people label as "lefty" or "liberal" anywhere else in the world would be labelled as "center right" politics.