That’s like suing people for telling others that you’re gay. That’s a standard of liability people would never rally behind, one which prevents you from speaking truthfully at the cost of another person.
Now replace "women" with any other group, such as people of color, Jews, armed forces veterans or Republicans, and see how it goes.
If he was uncertain about hiring policies and thought those were negatively affecting productivity, he should have taken the question to his manager or to HR, along with some evidence.
This is the original post I'm responding to. If I found an old blog post of yours which revealed life-altering information, should I be sued if I send it to a reporter?
It's fine to disagree with him, it's not to missrepresent what he said.