I think it is a combination of things; bias being only one. Desert settings and golf seem foreign to the traditional golf rater, especfially the east coast, Pacific and heartland residents who are raters.
The hard edge that Paul complaints about is an interesting comment, but one heard many, many times before. Is it that different than other hard edges? The boundary, road, wall or defined hazard edge? Harbor Town certainly has it share of hard edges, but I admit many fall along formal hazards, not wilderness.
At the original Boulders (second nine) Jack Snyder used full circle heads to irrigate the course. The turf established wherever it could. The edge was soft, random and "natural" in terms of look. But, obviously, a sward of grass in the harsh desert was no more "natural" than closely mown turf at St. Andrews.
Among Arizona courses that deserve more respect: Ventana Canyon (Mountain), Grande Valley, The Rim Club, Oakcreek CC, Kierland, Desert Mountain (Renegade), Legend Trail, Silvercreek, and Papago.