It’s not just the size, it’s the low density.

Low density means you need more roads which are very carbon intensive, additionally it also means you have to drive everywhere. While in a city walking and biking are viable options in the suburbs moving as little as half a mile often means crossing multiple lanes of traffic, no side walks, and businesses that are built for cars and not people. To compound this even further, it’s not just that one person has to drive for pretty much everything, but everyone has to drive to get anything done which further increases the need of car infrastructure.

Suburbs are not scalable, they need to die as soon as possible, and at the very least we should tax their inefficiencies through a land value tax.