Actually, the latest events on Jezebel proves the point of many of Jezebel's authors, which is that much of the internet is openly hostile to women.
No. Much of the internet is openly hostile, period. That has nothing to do with women, beyond the fact that Jezebel panders to a certain type of mock-indignation-queen so the trolls serve up relevantly offensive volleys of crap.
Jezebel is an awesome blog and has fantastic stories about the crap that women have to put up with in this country and around the world every single day.
Jezebel is a misandristic rag that pays the bills by targeting a niche demographic, no different than any other specialized news aggregation site out there. They get a pass on shit that would get modded into oblivion, or outright get the poster banned, on most other websites because patriarchy, grar!
Note that I don't specifically hold that against them (though not my cup of tea, personally). Slashdot does the same pandering to geeks, with attitudes toward certain areas of established law that sound borderline insurrectionist. Metafilter does the same with taking the progressive liberal stance to such an absurdity it almost bends around and becomes a parody of itself. 4chan... Well, let's just not go there. And Reddit has pretty much cornered the market on having subreddits that allow them to both pander to and offend every group all at the same time.
All that just pays the bills, nothing more, nothing less.
Welcome to the internet, ladies. People here don't play nice, your university's PC police have no power here, and you can't do a goddamned thing about it. Adapt or leave, simple as that.