They are related. The car-oriented cities that serve as only a destination for car-oriented suburbs. With huge highways cutting up neighborhoods that lead directly into a downtown that is mostly parking lots. See the example of Tulsa, Oklahoma that is fully encircled by massive freeways and half the surface is just parking lots.
You say that as if they aren't two parts of a whole. American cities and suburbs aren't distinct entities, they are two essential organs to a single body. All of the things people hate about American cities are enabled by American suburbs and vice versa. The hope is that remote work will enable more self-contained neighborhoods and small cities to replace soul-less suburbs and unlivable cities. Suburbs will likely be the long-term winners and cities the long-term losers, but the status quo in America was unsustainable, so something was going to have to give.
