Thanks Bumpkin, I was about to make that observation. The piece also EXPRESSLY and CLEARLY includes a discussion about the variables (or points) awarded to players for class, race and gender.
When the author said that "white straight male" was the easiest setting he was trying to show that this was the easiest starting point before any other variable was added. He was not denying that a white middle class women could have an easier "setting" than a black lower class man, for example. He was trying to explain the concept of privilege and how it works. Because, privilege works in concentric circles in a way, so that you black lower class man generally has privilege over a black lower class woman for reasons of his sex, and over an black immigrant if he himself is a native of the country he lives in, or a black lower class native man who is homosexual or who has a disability, if he is straight and able bodied.. I could go on, but I think I have made my point.
The only thing that I think, as a feminist, I would want to emphasise is that in all comparisons of privilege, the being male bit is nearly always a bonus. Even amongst people who have the least privilege in our society, it is practically always the case that a man and a woman in the exact same circumstances of race, class, sexuality and able ness the one who will be worse off is the women. This is why feminism is important despite the fact that discrimination is not limited to gender.