Look humorous or no, I enjoyed Stupid White Men, I thought it had vital things to say about racism, poverty and globalism. And even if he has simplified things or misinterpreted anyone in the book, our society is in a mess right now and anyone who wakes "regular folk" up to that is important.
However, I found that particular "end of men" chapter, to be unhelpful and divisive. I thought it had the same tone as all those men-mocking commercials where women roll their eyes at how useless they guys are. I think that kind of humor only creates more conflict between the genders.
I think a better approach is one which see that the gender imbalance in society is a result of both men and women being unhappy at their traditional "place", (such as men being told by the media they need to be violent and dominant) and both genders working together to raise each other's confidence and making the world better for each other.