Value judgement need to be made against an agreed upon standard. I think you'd need to argue that that the the suburban lifestyle is a poor way to the achieve the values that that those who currently like a suburban lifestyle actually have. That might be possible, at least on a margin. I suspect many in the suburbs would actually prefer something more like a "small town."

The closest hackerspace is 30km away from me. I'm not complaining but a world without single family homes would also mean that people can't have personal workshops and therefore there must be public workshops nearby to compensate. Each city would require multiple maker/hackerspaces.