So, I understand your intent, I suppose, but a think a more pragmatic viewpoint could be beneficial. Sure, this conference is aimed at women, but many tech conferences are predominantly aimed at men, simply because that's the largest demographic who attend. This isn't hurting men in any appreciable way, and could encourage more equality later down the road.

> Some radical feminists only accept 'born as women' to their conferences.

This may be true in some rare, extreme cases, but is frankly hard to imagine. Can you cite any sources on this? My experience (though I am neither trans nor a woman) is that people involved in the feminist movement or gender-queer community try to treat a trans person as much as possible as any other person of that gender.