I think Jay may be reading a bit too much into…

…the “walk” in walkable.

The reality is that people who cannot walk often prefer walkable neighborhoods because they are more likely to feature handicap-friendly facilities (such as sidewalks, ramps, and crosswalks) than suburban or rural locations.   In other words, just saying that an area is a walkable neighborhood or walkable city doesn’t imply that it is not appropriate for a subset of the population.