I am biased because I quite like living in the suburbs, and get quite suspicious when some manifesto comes up that dictates I should feel bad for it. Why is the solution to live in better designed cities instead of better designed suburbs? Are cities still necessary given the modern conditions?
It's a fundamentally parasitic arrangement.
What suburbanites want is to be close enough to the city to enjoy all the benefits of being in a major metro area, without the hassle of supporting the project of urbanity. They want all the upsides without participating in addressing the (very real) downsides.
A suburb is in physical reality little more than just another neighborhood that has declared itself to be something else entirely in order to shirk its responsibility to the whole (sort of like if I declared my bedroom to be a separate apartment, so that I didn't have to acknowledge my roommate's chore list). Declaring yourself independent of your metro's core city doesn't magically make it so. It's just sticking your head in the sand.