What's stranger still is when affordable housing advocates align with the boomers against building new construction because its not all affordable. Basically its much easier to say no to anything than yes to a compromise.
Affordable housing advocates would be happy to see low density mansions upzoned into relatively cheaper multi family housing but those are never the proposals we see. Instead again and again we see proposals to tear down affordable multi family apartments for working class people in order to build larger, more expensive multi family apartments for the middle class. I am unsurprised to see housing activists opposed to these sort of upzonings even if they would result in a net increase of housing.