Affordable housing is a red herring. Even the SF government economist has concluded that "luxury" units also reduce the price of affordable units, with a margin

Affordable housing is a red herring. Even the SF government economist has concluded that "luxury" units also reduce the price of affordable units, with a marginally slower elasticity. i.e. 100 affordable units are better than 100 lux units, but 110 lux units are still better than 100 affordable units. The affordable units is a clever scheme to block construction.