One thing to remember is when the rubber-core wound Haskell ball came along, it made the "bogey" holes easier than they had been. So eventually, they decided to come up with a new version of bogey in the form of the par system, which was just a way to round down the half par holes to the lower number. I would love to have someone share any essays, if they exist, where there was any language from the old dead guys suggesting they lengthen or alter a hole so it remains the same "bogey" challenge.
What should have happened in the past 25 years (of course this never would have happened) is reset to a new version of par, the way par was a resetting of bogey.
And this way, the holes that have remained threes or fours or fives could remain so, and once again, the short five and short fours, could have been downgraded from 5 to 4 and 4 to 3 without actually changing holes. [National Golf Links "lengthened" Hogsback by just changing it to a par-4.] Too bad the rest of those "compromised" golf holes never could get around to just saying such and such hole is no longer a par-5s. For many courses, what was once a par 72 is now a par 68.
I guess it is our need to have par remain in the low 70s despite the advance golf technology, and that conflict caused some degradation of classical architecture.