Peter,
I agree, and I agree on all levels.
As to the high rankings of the GA courses, no doubt the top ones earn based on design quality, but some of it is nostalgia, some is history and tradition, and some is perspectivre.
As to perspective, I will offer this - many romantically look back at the 1950's as a great time. Yeah, if you were a white male! For a lot of others, it wasn't so great yet we revere it as a country, glossing over so many things. If nothing else, the current era has brought the public venue up to the level of the country clubs, democtratising golf. For that, its a great age, but in addition, our top courses match the top courses of the Golden Age as well. Moreover, given the length issues and changes in the way the game is played, in the not too distant future we will look up and see most tournaments played on modern courses, too. (Not all, but more and more) because they are better suited for tournament golf, too. Think Torrey, CB, EH, WS, etc.
None of this is meant to take away from the greatest of Golden Age courses. Its just a genralized opinion. Like Kyle, I believe that in virtually every field of endeavor, those who think we can never equal the past much less improve it, have been proven wrong. And, if we can't, then why don't we all just jump off a bridge, anyway?