Most of the formula you cite can be traced to the fact that courses built from the 1960s on were built with modern earthmoving equipment and also many were built on less than desirable sites -- flat sites good for homes, but not always golf. It was simply an extension of the "ideal course" concept where golf architects, park planners, army generals and golf pros inflicted there idea of what was "perfect".
Too bad, I agree.
In my routing book I write extensively about par order, sequence and breaking the "rules" -- indeed, whether there should be rules. Here is a bit about one of my favorite "poster childs" of routing oddity:
...ishop Auckland, is a charming 18-hole layout in Northern England. The Bishop, as it is known, sports a most unpredictable order of par. Beginning on the front side, golfers face holes of modern-day par 4, 5, 5, 5, 3, 4, 3, 3, 5 = 37, and, continuing on the back, par 3, 5, 3, 4, 4, 4, 4, 4, 4 = 35. There is simply nothing “usual” about how Bishop Auckland is routed, the order of the pars, or balance between the nines..."