Selecting the best person for the job isn't discrimination but IMHO, celebrating a 50/50 split is discrimination if that isn't the natural gender split.
WTF is a "natural gender split"? This is a cultural problem, and that culture like to hide behind a supposed nature which in large parts really just is learned behaviour, resulting from that culture.
And I'm saying that's based on culture more than nature. One can't suppress women more or less worldwide for millenia, then say "equal rights, voting rights, go!" (in some parts of the world), and then take time shortly after, without looking at all the power and role training that has been accumulated and is still in effect (it's not like feminism got through to every last one even in "the west", is it), and explain the remaining inequalities as "just the way it is" or whatever. "We" owe "them" a lot more than that, and not little of that is centuries, millenia of genetic selection. Now that smart women don't get burned at the stake so easily, and can choose their partners freely, we'll see if they won't catch up.. I kinda have my hunches ^^
As this case and others (c.f., GoGaRuCo, which uses the same method) shows, the natural gender split is 50/50. When the submissions pool is 50/50, and they do a blind judging of the submissions, they end up with a 50/50 split in speakers. In other words, they keep demonstrating that there is no essential difference in technology based on gender. When they hide from themselves the gender of the speaker, they end up choosing equally from men and women.