Mike. I agree with you wholeheartedly...to a point.
I think a person can become over obsessed with breeding a clear "everything" dog and not consider that this dog can't mark and has a poor temperament (example), whereas another dog maybe be "less" clear and have exceptional non testable traits and never be considered by the same person.
I proudly bred an EIC carrier female...something that is debatable amongst folks...although less now then a couple of years ago.
I also spayed a wonderful dog that has Retinal Folds (RD/OSD carrier). She's on the Derby List, is QAA and running Opens now. Vision NOT an issue at all. She has a spectacular temperament, can flat out mark, is great in the water...yadda...yadda...yadda. Do I wish I could breed her to have what I think is a wonderful addition to the gene pool?? Yes, absolutely. Do I regret spaying her? Only in moments of weakness. Do I think she should be bred? No, absolutely not.
I think SOME genetic issues should not totally eliminate an otherwise wonderful dog from the gene pool and I think some people can get too focused on clearances rather then the dog itself. But would I want to mess with health affecting issues that are PROVEN to be genetic? No.
Not one dog in our breed is truly "clear" of everything.