The personal attacks on Adria (death threats and all) are disgusting, but they're not the kind of thing that keeps women away from tech. It's the small discouragements, like the one you did when you mocked a stranger's repo (probably without knowing her gender) that keep women from thriving in tech.
I'm really sorry for the ad hominem/tu quoque, but if you want to make tech a better field for women, you have to make some adjustments that can make it better for non-heterosexual people, people with disabilities, foreigners, etc...
It's not enough to be open for women in tech: we should strive to be friendly to people who don't have the same level of proficiency, people with different tastes and opinions, and strangers.
It's not a kid with a DDoS tool and a fake Twitter account who makes a women avoid a career in STEM. It's a well-meaning technologist accidentally being an asshole (http://blog.steveklabnik.com/posts/2013-01-23-node).
Actions trump words.