Their argument is much more disturbing than that. They argue that middle to upper class suburban living is subsidized by taxation on people living in high dens

Their argument is much more disturbing than that. They argue that middle to upper class suburban living is subsidized by taxation on people living in high density neighborhoods. These neighborhoods are predominantly populated by the poorer people. In other words, rich people are making choices and getting poor people to pay for them. It's not that low density suburbs are evil, its that towns and cities are making unsustainable financial decisions based on deeply flawed information and as a results are bankrupting themselves and trapping poor people in urban blight.