I don't think the divide is so much that old guys like classic courses and young guys like newer courses. It's just that a lot of newer courses are easier to get on, and a lot of the classics (CD among them) are not all that easy to get on. Older guys tend to have played more of the classics, whether it's through club connections, business connections, or just life experience. Most of the great classics I've played (which aren't numerous to begin with), I've played once, and I'm sincerely grateful for those opportunities. But I don't have Pine Valley, Cypress, and Merion (or CD) members ringing my phone off the hook with invitations for multiple plays. Kingsley is pretty accommodating for guests, and of course, there's enough of us here that pretty much anyone on GCA can tap a member to sponsor a day (I'm sure this is much the same for Ballyneal and Dismal). Add to that Kingsley's "favorite son" status on GCA, probably fueled somewhat by the fact that it's kind of "GCA's little secret" in the golf world, and you're left with a course that a lot of people on this site have had the opportunity to play more than once, and probably had a pretty good overall experience at the time (thanks to our staff for that). I mean, I don't see CD hosting a Midwest Mashie anytime soon. That's not a knock, that's just reality.
I also think there's a little bit of ratings bias that creeps into opinions on the great courses. Did I walk off CD thinking it was great because it was truly great, or did I think it was great because it's rated so highly and I'm supposed to think it's great and people will discount my opinion if I don' think it's great. Rinse and repeat for all of the great courses. I'm sure panelists face this same dilemma when they turn their ratings in on great courses.
I don't think this thread ought to sour anyone on GCA, though. These are discussions we'd all have no matter where they were taking place. Every internet hang out has to get meta every so often.