As I said, these essays propose and defend additional restrictions on building new housing. His restrictions are slightly less sinister than moratoriums, and come in the form of affordable housing requirements. He is still adding regulatory burden to the legal code, just slightly less burden than some of his peers have proposed.
I'd also like to point out that Wiener strongly advocated solar panel and beautification requirements for new construction. Requiring solar panels on homes is a great way to pat yourself on the back, but not a great way to generate electricity. Let's build solar power plants, not require every new apartment to cover it's roof in panels regardless of the economic sensibility of doing so.