(Unfortunately, however, even many of our suburbs are not well-positioned compared with other cities. The mania for land during the boom led to extraordinarily dense developments — in essence urban neighborhoods plopped down in the suburbs — with houses on top of one another, paired with a dearth of decent amenities such as parks.)So perhaps Las Vegas is not suffering from a lack of urban neighborhoods after all. There seems to be a mix-up here in terminology, with confusion as to whether "suburban" describes a) a type of house, b) the form of a neighborhood, c) the (lack of) amenities in a neighborhood or d) the location of a neighborhood within the metro area. But if the form of a neighborhood is "extraordinarily dense," and dense by way of many small lots on reasonably well-connected streets, the essential physical prerequisites for an urban neighborhood arguably are met.
The author does note at toward the end the possibility of enlivening these neighborhoods by introducing non-residential uses — the concept known as "retrofitting" that has been written about extensively. But with the imprecise usage of "urban" and "suburban," it's easier to overlook those good urban qualities that may be right under our noses.