Also: Why are women more valuable than stutterers at conferences?
Also: Why are women more valuable than stutterers at conferences?
The basic answer to that is that they're not - if you know someone who stutters, I would like to think that you'd encourage them to present at a conference if they had something valuable to present.
However, imagine that that conference is a brofest - they're not going to feel very included, are they? Bros are assholes after all, and they probably won't want to participate if they feel that they're going to be mocked or not listened to.
Being on stage in front of an audience who are tweeting about your physical attributes, not what you are saying; who are snarkily commenting about you being the token blonde; who are assuming you got there because of your birth, not your brains -- that's not a hindrance to speaking?
Even if none of those things are true, they can be running through the speaker's head, just as a stutterer is incredibly self-aware of their impediment. We create our own barriers.
The definition of stuttering involves having problems with physical speech. The definition of woman doesn't involve having problems with physical speech.
Stutterers are underrepresented in most conferences; even if you could get them up on stage, it would be a difficult presentation to listen give eloquently (and probably hard to listen to). Women are underrepresented at conferences, but it's not because they would have a problem presenting. Some people might have a problem listening to it, but that'd be largely because of their own issues.
Comparing stutterering - a physical (or perhaps mental) impediment - to females is insulting.
I've seen few female presenters bomb, and the ones that did - there were much easier explanations - no or little experience public speaker, didn't understand the topic, etc. The ones I've seen who know the topic and the audience and have spoken before in public are fine - no better than men. I do have occasion to listen to male speakers who stutter, and while I know they're smart people - they know their subject well - they can not present.