Gib,
Now I understand better what you are saying. Trust me, I can relate as many times people come into town here and they just want to play Saucon instead of Lehigh because they never heard of Lehigh! However, if they have access how can you blame them.
But also remember, these lists are formed by raters (which you are one) so aren't you as much to blame as anyone? The reasons these courses show up on the lists is because people like you went out, played them, liked them, and put them there! Pacific Dunes is on the list because raters put it on there. Should golfers pass on playing that one? Should they pass on Bandon Dunes while they are there? The same goes for all the others!
So many courses, so little time!
To me, whether you say a golfer "collect" courses or not, the true test is did they have fun while they were doing it! That's what really matters! Remembering details of them a year later is just a memory test, some of us are good at it, some aren't. It's not necessarily a function or indication of how good the golf course was!
I've played The Portland Course at Troon to check it out, but I get over that way a lot. However, if I'm your average golfer spending a small fortune to make the pilgrimage to Scotland and have time for only two rounds in that area, 99% are going to play The Old Course and skip over to play Prestwick or something more famous. Sorry but that's reality.
Those hidden gems you talk about will eventually get discovered, show up on someone's list or get passed along by word of mouth and the golfers will come!
I expect that will happen very shortly to one of the hidden gems in this area
Mark