I see the original error, back in 2022, as the event organizers opening the conference to people who call themselves 'non-binary', as this implicitly made the event centered around 'gender identities' rather than the female sex. As anyone, including men, can claim any 'gender identity', the organizers effectively stopped the conference being aimed towards women.

The other problem with centering the conference around 'gender identity' is that this redefines 'woman' to be some sort of unfalsifiable inner abstract feeling of femininity. But this doesn't make sense in reality, given that this is not the basis on which women are discriminated against in tech or anywhere else.

By trying to be more 'inclusive', all they've done is promote female exclusion - the exact opposite of what the conference was originally set up for, which was female empowerment and celebration of female achievement.