I find this a really odd point because you could say the same about people with any sort of privilege. Did Jack Welch succeed because of his intelligence or because of his race/gender? Well, a little of column A and a little of column B. White dudes do have an easier time in the business world. Should we discredit all successful white male businessmen? No, of course not. Why is it any different with minorities and Affirmative Action? Some people have privilege by circumstance and others have privilege by design. So be it.