He's not referring to the net worth of all of those households combined That's exactly what is written; it's not ambiguous. You can try to argue that he meant

He's not referring to the net worth of all of those households combined That's exactly what is written; it's not ambiguous. You can try to argue that he meant something different. What do you make of the other points he makes? It's already proven wrong. In areas with commerce but no parking, the "parking" demand is just externalized upon others, mainly in the form of "double parking" (stopping in traffic lanes). Those carfree San Franciscans are still using Amazon and Doordash and Ubereats and Chewy and grocers etc. like crazy, creating more vehicle trips (and of larger vehicles) than if they drove and picked up their own purchases in combined trips like to/from work. It's like Leonardo DiCaprio and Roger Waters flying their private jets across oceans to give speeches about how everyone else releases too much CO2.