Kotkin is of course correct that "urban land owners, planners and pundits" want people to live near public transportation in dense clusters - mostly downtown. Unfortunately for the planners, actual Americans want to live in the suburbs, the exurbs, and in small towns or rural areas:
Aging boomers tended to move out of dense urban cores, and to a lesser extent, even the suburbs. If they moved anywhere, they were headed further out in metropolis towards the more rural area.