While I have never been there myself, maybe some of the members who make the trips down to the Mexican resort lakes can chime in. Their reports from those lakes seem to have both numbers (80 fish days) as well as size (plenty in the 6-12 lb range). I believe these are world class waters not because they have a low population density, but because they have low fishing pressure combined with the right environment to grow larger than average bass.
Your comment regarding counting fish being lame is interesting when you later give the definition of a "red letter day" being a certain number of a certain sized fish. In that scenario, you too are counting fish, but only those within your parameters. To summarily dismiss what interests others as lame and try to classify your preference as worthwhile is wholly subjective. If someone felt spending 5 days on the water for 1 bite from a double digit bass was lame, they would be wrong. Not because that kind of trophy hunting is somehow more worthwhile, but because for most of us, bass fishing is recreation, something we do to relax & enjoy ourselves. Who am I or you to declare that an activity that accomplishes that for someone else is lame just because we don't like it?
I count the number of keepers I catch because I enjoy recording such information and looking back at it over the years, both for recollection and for comparison purposes. I enjoy every fish I catch, no matter the size - each one is different and I never get tired of checking them out. I will use the techniques and methods designed specifically for larger fish, but I won't do it at the exclusion of catching as many keepers as I can figure out how to. I don't begrudge what interests you, I won't call it lame, it is your deal & I am glad you enjoy that.
As an aside, my older brother is similar to you in regards to fishing. He has very little interest in fresh water fishing, he instead loves to go after Marlin, Sailfish & big tuna. He spends a lot of money to pursue this passion, but enjoys every bit of the process. Different strokes for different folks.