Probably a combination of fatigue and not wanting to deal with the toxicity these type of threads tend to be utterly soaked in. "Confronting the problem" is hard in the company of reasoned discussion and nigh-impossible in the face of extremists.

*edit

And that's why I flagged it. Not because I'm some horrible sexist, or because I want women to fail, but because I don't want HN turning into Tumblr or SRS. On top of all that, they also tend to be the worst kind of predictable and boring - i.e. the complete polar opposite of what great HN content is. No thanks.