Garland,
1. Ease and intimacy of routing
The extent to which the sequence of holes follows natural contours and unfolds in an unforced manner.
This one seems to have a good focus on walking. Otherwise, how could there be an ease or especially an intimacy, to the routing?
3. Natural setting and overall land plan
Quality and aesthetic relationship of golf course, clubhouse, cart paths and other facility features to surrounding structures and native scenery.
Maybe that horrifically ugly land plan w/all the surrounding houses at Wine Valley is detracting from the available points in this category?
10. “Walk in the park” test
The degree to which the course ultimately is worth spending a half-day on as a compelling outdoor experience.
This might not speak directly to your opinion of what makes a course walkable, but it does reveal if the experience was worth the time. I don't see the conflation with wealth, but maybe I'm lucky to be in New England where so many of our reasonably priced courses are a wonderful walk in the outdoors.