Lou,
Good points, and I meant no offense by my use of the terms "myth" and "convoluted", although I can understand that they could be personally construed as such. Please accept my sincere apology.
Now, back to our argument!
Certainly, many of the golden age architects including Mackenzie talked about building courses that were cheaper to construct and maintain. It made for great PR, and these guys were businessmen. Similar to today, the actual projects in the field and their costs ran the gamut from Ross's little munis and paper jobs to Raynor's attempt at draining the Lido Channel! Tillinghast, for instance, wrote whole articles on earth-moving techniques, as did Ross, and others. My point, and my example, is that Ross COULD have easily dynamited away the ridge on 10 at Plainfield. It is hardly Mount Vesuvius.
Why didn't he? Because he was trying to save costs at a well-heeled, financially established (1890) club outside NYC that had entrusted him to build them a new course? I seriously doubt that was his motivation.
As far as Mackenzie's greens, I think you've proved my point, actually. As you stated, Mackenzie was very concerned about providing "fun" and "enjoyment" for the average golfer. Does the average member of ANGC enjoy the greens there? How about those at Cypress?
I'm not sure that the Good Doctor would have agreed that building tame greens that putted quickly would meet his criteria of "enjoyable recreation". Perhaps it was simply his affinity for the outlandishly rolling greens at TOC that colored his viewpoint.