One of the tests that Strong Towns offers to determine whether your town is a strong one is this: If there was some emergency (say, a fascist takeover) that required the community to gather together, would people know instinctively where to meet? In lots of low-density, car-oriented landscapes, there's no there there, no community/symbolic spaces where people would go.
Obviously, this is an analytical tool, not guide as to what would happen in any real-world scenario. It does highlight the decline of community, and the fraying of the weak social ties that hold a community together. How do we as Americans organize ourselves to resist when so many of us don't know even our close neighbors? How do we work to reduce political polarization, which is done by daily, face-to-face interaction with people who are not like us, when we have so little community interaction that's not through a windshield?
It's a chicken-and-egg problem as to whether the destruction of community is a cause or effect of car-dependency, but what's clear is that the fascists are here and taking advantage of the fact that we've fucked ourselves over with a car-dependent landscape for too many decades.
This doesn't seem like a good-faith argument, because this is a pre-schooler's take on transportation issues. Anybody with a passing familiarity with roads can see the holes in it.