I read the article this morning and found it has some interesting data.
Although,the article indicates data "established standards at various levels—for 70 shooters, 80 shooters, 90 shooters, etc.—using his database of more than 100,000 shots hit during 1,200 actual rounds on 10 different courses" the article does not describe any further details.
We as amateur golfers rarely can be considered for these type of statistics due to the enormous population of social golfers.
The measuring stick has always been the elite professionals, but with the popularity of the game, there are now many highly skilled golfers all over the planet who will never play a PGA or Tour event due to numerous reasons.
We all try to improve our game, but measuring statical data of Tour players versus mere mortals, seems irrelevant.