You don't go to many tech conferences do you?

Women are very well represented at most, and very welcomed.

What is your definition of well represented? My experience is that most conferences are well under 50% women... although I do tend towards open source, which is worse than average.

(1) She publicised herself widely, posted the picture on Twitter, wrote a long blog post on her blog, named her employer directly, claimed her employer backed her actions, has all her contact details and photos on her blog and Twitter. She made herself public.

You don't know much about the guys as they didn't make public claims or announcements.

You appear to be saying they should be identified, named and shamed... which is exactly what Adria tried to do, and look where that ended up

(2) The guy in question apologised almost immediately on HN, a very well written, and seemingly honest and heartfelt apology for making a mistake.

The PyCon organisers took the guys and Adria into a room and discussed the matter at the time, and all were said to have apologised and agreed the matter was over.

If "everyone" thought it was an injustice that the guy lost his job, but felt it was fair and reasonable that she did, perhaps this tells you something. Perhaps it tells you that "everyone" thought her actions were wrong (as the instigator of this affair), and the guy did little wrong

The "reason these things are happening in one direction" is that Adria behaved like a jerk. Quite simple really.

Not a woman jerk, not a black jerk, not a Jewish jerk ... just a jerk.

Regarding point (2), you are completely wrong. You are saying that because lots of people harassed Adria, therefore she was a jerk and deserved it. That is trivially disproved by noting that ethics as such exists, and is not simply whatever a group of people does. The reason this is happening is because people like you are shitheads who are doing bad things or enabling other shitheads to do bad things.

More so, her actions have opened her up to a lawsuit by Sendgrid for financial losses incurred by her actions outside her contract of employment.

But no smart company would pursue that route, the PR would cost them more.

The message sent is: if you cannot properly evangelise for a company, and are prone to gaffs and pulling your employer into overblown Internet dramas, you cannot work as an Evangelist

Had she been serious and professional about this, she would have sought her employer's backing before going ballistic.