Mike,
Well, I guess we can look at it as positive or negative -
Bad - Marketing fools some people some of the time
Good - Eventually, golfers figure it out for themselves.
Bad - However, if they already have invested in that new home and membership, they may be stuck anyway.
Looking at the courses on the "ranking" or upper end, it occurs to me that general styles have fallen out of favor. Obviously, for so many Golden Age courses to have been changed up post WWII, it seems the combined trauma of the war and recession had folks clamoring for something new and different, so the classic fell out of style, for reasons well beyond golf itself. If the courses had declined in that period due to more pressing concerns, that probably added fuel to the renovation fire.
Then, tough courses were "in" due to Golf Digest, so more classics left the list.
Now, fun is back in the rankings, so the Fisher's Island and what not are back in style, and highly ranked.
Minimalism is the rage, and must affect rankings.
Who knows what trend/fad will influence such things next.......