Well doesn't that say a lot more about your prejudice against Oprah than it does about Oprah's judgement? You had an expectation, a bias. If she picked something you though was good, that was an "exception," not that you were simply wrong. Is it that she's on t.v., that she's a woman, that she also believes in self-help books? Is it that her audience you see as housewives in Des Moines who must of course be stupid and gullible? But you're not being elitist.
It was the last book I would have expected Oprah to pick. I was angry she picked it as well, because it's too good a book for her to promote. When she endorses a book, I expect mediocrity. She destroyed my image of her with this one.