I am not going to give any opinions about this or other specific golf course ranking, but I do want to make two statements that I am surprised I have not yet seen fully articulated on this thread.
Years ago when someone came out with some "significant" shake up to their list of best restaurants in the world, I read a comment that seems quite obvious but gets missed. These "rankings" typically come from someone who sells magazines or books. If the list does not change, there is not reason for the public to buy their latest publications. Those performing these rankings have a strong incentive to shake up their lists and to generate lots of talk about their lists.
So Golf Digest likely says thank you to GCA for this tread.
Although I would counter that if the list creates too much negative discussion there does create the risk of the source of that list losing credibility. But based on the history of golf magazines and the current state of golf magazines, this risk may be miniscule.
My second comment is that I like these lists more than I dislike these lists.
I dislike seeing courses ruin their good features just hoping for a good ranking, and I dislike courses designed around how to get a good ranking.
Nevertheless, it is interesting to see if there are some courses I was previously unaware of, and try to find out more about them to see why so many others think highly of them. It is also interesting to think about if some highly considered courses are overrated.
Of course in the end, I hope that I make my own final opinion about what I like and dislike on courses and which courses I like or dislike, despite how those course are ranked.
I have been on the grounds of Augusta National, but I have never played the course. As a big golf (and sports fan), Augusta must be visited due to the history of the Masters, and if I ever played Augusta National, it would be one of the great golf thrills of my life. But if I was offered a year of golf at any course, I honestly would choose 16 other courses on the current list before I would choose Augusta. This is not evidence the list is faulty, it is just my own opinion on what I enjoy from a golf course.