Even newer than the ATC is the 2004 guidebook, which gives 3 stars to a 5.5 nearby and 2 stars to a 5.6 nearby. This was not the case for the guidebooks in the 70s, 80s, and 90s.

I can not place the timing of the trend from walking off to rapping off but I imagine it coincided roughly with the placement of bolted rap anchors circa 2000, which accelerated the loss of downclimbing skills among new climbers, as well as shifting the trend for those uncomfortable downsoloing with 150' of air from using walkoffs (down Roger's) to raps, and from walking 3 minutes to a rap (High E) to looking for a rap within 50 yards.