Homelessness also decreases when cities simply let more housing be built, even if luxury housing. Eh? The paper you are citing doesn't mention homelessnessnes

Homelessness also decreases when cities simply let more housing be built, even if luxury housing. Eh? The paper you are citing doesn't mention homelessnessness at all. You might want to believe that a decrease in homelessness will follow from the kind of value-chain effects it describes -- but if so, that's your own speculation. Not something that the paper makes any claims about. Yet you're waving it about as if it does exactly that. Meanwhile, it's a complex subject (due to secondary effects), and other papers (easily findable) have described either negative rent-lowering effects, or extremely limited rent-lowering effects (or effects that reach the mid-range but not low-range). And the paper you cited not only does not make any statement against the social housing policies that you vilify -- in the conclusion it tacitly supports them. And it explicitly says that adjustments to market-rate housing "are not a panacea for all housing-market problems."