Since it was something I wrote that instigated this thread, I guess I should respond
In my humble opinion, it was Abercromby, Fowler, Colt, and perhaps Willie Park, Jr., too, who pioneered inland golf course architecture, in the heathlands, at the turn of the twentieth century. Those guys were the first notable golf course designers to truly utilize natural landscapes to great effect; to create strategic holes in the image of the Old Course and other ancient seaside links; and, to strive for naturalness in the construction of artificial golf course features.
So, when I say, golf architecture has 'come full circle' in recent years, I simply mean that a bunch of bright, young(er) golf architects working today have made a study of the history of their profession, and have subsequently come to learn that employment of those same principles - utilizing native landscapes, creating strategic holes, and striving for naturalness in construction - have resulted in the most enduring golf courses in the world. In turn, we find more than a few contemporary golf architects trying to apply those same tried-and-true principles to their own work, these days.
Sure, not ALL golf architects working today are doing the same. But, in my opinion, the most exciting golf courses constructed throughout the world in recent years have been designed by guys who clearly reflect on the past; particularly on those pioneering efforts in the heathlands that spawned the practice of golf course architecture. Before that, all the golf world basically had was a bunch of pros taking half a day to drive 36 stakes in the ground to mark where the tees and greens should be made.
So, if you consider that early work in the healthlands to be the 'start' of it all - as I do - than golf course architecture has indeed 'come full circle'.