Get past his politics and read the direct factual assertions he is making about things that happened at that company. They're spectacularly bad.
Not only is this terribly racist and sexist culture not just a figment of the author's politics - it's something the company is proud of: http://www.slate.com/articles/technology/technology/2012/08/...
I really hope these jokers get sued out of existence. These kind of companies are the reason anti-discrimination laws should exist in the first place.
I hope someone takes him up on that dare.