Don't we have to look at this MM and the advent of more green, soft and aerial bias game in the context of the times it grew as a concept that those archies thought was the new modern way to showcase their design talents? I think the whole thing can be looked at as a parallel set of timelines, one tracking the invention and subsequent improvements in irrigation, pumps, sprinklers, and controlers, and also the evolution of the various mowers and their specific capabilities, and the other timeline was the evolution of design philosopy.
If you were RTJonesSr, or RB Harris and the most technologically advanced irrigation equipment were coming out during yor career, wouldn't you feel as a modern professional that your designs needed to take full advantage of the burgeoning technology in that era? Of course, what irrigation technology that they thought was wiz-bang great new stuff, is junk today, with no real specific application control (rather than on-off, long deep cylce or short time). Circular dispersal patterns with single row and general area blunt green coverage were pretty much it. So, the then modern designer began to see that they could really green up the turf, more year around, and not have times of the year that the course became rock hard like cement.
(I would like to hear from George Bahto on how much evidence in the way of commentary and written complaints he encountered from early era members bitching about how rock hard the course got at NGLA, and if there is evidence that the amount of play actually dropped when those conditions were present)
So, with the new irrigation technology, allowing for green (translating to soft due to lack of early application controls) what do you think became conventional wisdom of that new class of golf course architecture mentors and landscape archie programs in the late 20s through 60s? They started teaching techniques that took advantage of the evolutionary developments of the irrigation and mowing technology. The most advanced always in picking up those newest turf technologies was ANGC. They became the ideal. TV coverage advanced that mindset and lush green became the standard all others were expected to achieve.
But, also with this new ability to irrigate, came the wider spread popularity to play the game. So, putting the pressure of increased number of rounds played on the stressed superintendents that were being asked to keep the courses lush and green, caused them to pour more water and fert and chems on their courses, and a vicious cycle of maintenance meld with design ensued. The mentors and teachers in the LA schools had to adopt or migrate to the mindsets of the aerial game as the ideal that took advantage of the new technology that would naturally present a softer course.
Nowadays, triple row, partial radius sprinkler heads, and mowers that can be more focused on specific tasks offer the archie the ability to reconsider the maintenance meld they want for their design. The back to the future trend has set in by some backward thinking archies that saw that they could now have it both ways. They could design wider, courses with internal fairway features and bigger greens with more contour, and focus water in precise amounts where needed to promote ground and aerial options. Single row irrigation, with uncontrolable radius and dispersal was really a limitting factor. Today, the options to design more into the field of play are greater, and mentors like C&C, Doak, et al; and also LA schools can begin to look back at what was great in the old firm and fast school of design, when firm and fast and wide and rolling was a fact of nature that they had to accept, and those early archies made the best of it by designing for it.