Have you ever been to a small city? I can’t find a logical way in which a small city surrounded by undeveloped land would be unsustainable.
Do you have to drive to the grocery store? Do you have to commute to work? Do you grow monoculture grass lawns? Are the roads winding instead of straight? Do private lawns create circumstances where to get to the nearest store you have to go multiple times the actual distance to get there? These are all ways in which suburbs are unsustainable.
There’s nothing whatsoever wrong with winding roads. Sincerely, a European.
I’d rather be worried if they’re straight, are built like highways, and have no sidewalks. If they don’t have sidewalks they better be gravel or cobblestone.
Not inherently, no, but in suburbs there is. A 2500ft walk to a store can be 4-5 miles because of the winding suburban streets.