> all those "new tech" people hate new tech in their own areas

Unfortunately, the recent generation of tech workers have not been represented in local politics. As far as I know, none of the supervisors or mayors in recent memory in San Francisco have worked in technology; they typically come from nonprofits, unions, or just landed gentry. It is not young tech workers who refuse to rezone and amend the building code for affordability, it is older homeowners and nonprofit special interests. The Board of Supervisors (the city council) has been rather hostile to tech for the past decade or more.