I found those quotes to be pretty ridiculous, and, like Tom Doak, not just in the formulaic nature. I guess he was bipolar because his writing and his work seem to have polar opposite examples.
Sunnehanna has numerous front to back sloping greens that could then and can today be approached in the air or on the ground. Seems to me he has some courses with some pronounced undulations in his greens as well. I may be wrong, but why are greens with pronounced back to front slopes needed for spinning approaches more so than flattish or oppositely sloping greens? I would think a spinning shot would be more effective on less sloping greens than any other trajectory/spin shot.