Because Adria is the only person who has the power to shame someone publicly? She's the only one with 9,000 twitter followers, she's the only one with a camera phone, and she's the only one who can upload photos to twitter?
I find the concern of being in the same room as her incredibly stupid.
She's someone with a history of senseless public shaming, and apparently a fair bit of grandstanding [1]
You're entitled to your opinion, of course, but what's being discussed here isn't the ability to perform an action but the willingness to do so on a whim.
I don't have twitter, Facebook etc. Even if i did i doubt i would have that many followers because i don't find any appeal in it. I could not reach the audience she did. I do not have the power to easily shame someone publicly.
I think that goes for most people. I would be concerned and i'm female. What if i disagree with her? Its not stupid, its cautious.
Anyone can easily reach the same audience by creating a twitter account and tagging it with something popular. I'm sure there were plenty of people in that conference with way more followers.
You should be more afraid at the veritable brigade of angry internet-goers who were stirred up to the point of DDoS'ing her ex-employer and harassing her. But no, focus on the woman who posted a single photograph on her twitter feed. I'm sure she's more dangerous.