I think a lot of these attempts* at fake urbanism fail internally, but even the ones which don't usually fail externally. I think the kind of "town center" developments that pop up, which include a bit of residential development and some degree of internal walkability, do provide a different-from-usual product that some people want, but too often these places have no external walkability. That is, the only desirable way in and out is by car.
*I'm thinking less of the ones mentioned in the article and more of the ones you see plunked down in various suburban locations.
