The following story has nothing to do with scuba, but does describe a psychological trait which some might find apt for this thread.
Many years ago I taught a literature course in science fiction at the University of Colorado. We looked at one of the first published short stories by Robert Heinlein, who years later was to become a giant in the genre. Since it was a literature class, we looked at literary technique. I pointed out one technique Heinlein used that was done particularly clumsily by the young writer. I said that the problem early science fiction writers had was the same problem Shakespeare had when he first started writing plays--with no competition in a suddenly popular medium, everything he wrote was published, even those first plays which were, frankly, not very good, especially in comparison with his later work. We thus get to see the early work with the flaws we do not see in other writers because their early works did not get published.
One of my students objected, saying that there was nothing wrong with the example I gave. When I pressed him to explain why he was defending what was so obviously poorly done, he finally said in nearly so many words that he thought Heinlein was one of the greatest writers ever, one of his heroes, so it was not possible for him to have ever done anything that was not excellent.