Author complains that people are acting badly, but these people are everything that the world consists of. There is nothing else on the receiving end of his message except these (and other) people. Who else to express your opinion to? I'd assume author knows that. When you add salt into your tea, you don't blame your tastebuds for disliking it. Occasionally, however, you dip bacon into chocolate and your tastebuds go "whoa, awesome". This is the risk of controversial opinion. If you make it, just prepare yourself for the inevitable. There is a reason experiments require goggles.
As a community, we should strive to be calmer and more thoughtful about the way we express ourselves, and try harder to make the right calls. If everyone could do that, however, we probably wouldn't have the sexism problem in the first place.