Patrick/Racetrack George,
I feel your opinions are valid, however playing the great golf courses is not the easiest thing to do for most people. I wouldn't hold it against a student of golf course architecture if they haven't played Augusta from commenting on the strategies, as they don't exactly take tee times. I do think that someone should have at least walked a golf course in order to start a discussion, and yes, I'll yield that only playing a golf course (more than once) will allow someone to discuss the details with any authority.
I have been lucky enough to play some of the great golf courses, and I make an attempt to walk any others that I can. In 1995, I made the road trip with my brother to watch the US Am at Newport CC, and in both '95 and '04 I bought weeklong passes to the US Open to enjoy Shinnecock. I would have no problem commenting on any hole on that golf course, having walked the properties many times and seen the best in the world tackle them. I don't think that my opinions on either should be discredited because I haven't played them. Again, I'm not the type to make too much noise on this site (A, I just joined and B, that's not my style), and I would defer to someone who disagreed with my opinion that has played either course many times.
You won't see me participate directly on any threads on a golf course that I haven't played or walked, and therefore, I only read the posts on such places as NGLA, Merion, and Cypress. Being a student of the game, I have an appreciation of these places, and I'm aware of the quarry hole, the back to back par 3's, and the redan hole, etc.
I just think that this site is a great educational tool for some who are trying to gain a little knowledge and appreciation, and even if someone hasn't played the great courses, they may have a worthy opinion and it shouldn't be immediately discredited on the grounds that they haven't played in the Jamboree at Augusta.
Mike