You can't please everyone, this is a simple fact of life.
And if you go out of your way to DISplease NOONE, then you will wind up with an "event" which is mind-numbingly dull, held in a beige room of carefully-moderated, diffuse lightning, with a smooth jazz version of The Girl from Ipanema playing, where the snacks consist of all-you-can-eat, gluten-free, salt-free crackers carefully chosen to be absolutely inoffensive to anyone, regardless of religion, background, racial origin, dietary restrictions (medical or otherwise,) and absolutely, positively unlikely to bring up any objections.
So what exactly should be done, then? Obviously, Microsoft were attempting to throw a party; clearly a party for those tuned-in to the culture of video gaming. I see dark lights, laser decorations, probably pumping music, so clearly "I wish I were still 22" fading-youthful enthusiasm was the theme of the party. It seems to me that sexually-attractive dancers fit that theme in ways that, say, a marathon screening of Season 1 of My Little Pony: Friendship is Magic would not have been, irregardless of whether or not many people there would have enjoyed it.
So, what exactly are the ladies who stormed out complaining about? That they were not equally represented, because Microsoft failed to hire a busload of chippendale dancers? They would absolutely have a point in raising that complaint; fair is fair. If you're going to titilate the men in the audience, you should titilate the women. (Also, on the topic of inclusiveness, an all-girls dancing lineup would have done little to nothing for the gay men in the group, while it would have been fine for the gay women, and vice-versa.)
Now, if their complaint is that they find it degrading, I have to ask: why? THEY were not asked to don skimpy schoolgirl outfits and dance for their colleagues, were they? They certainly would have a bone to pick if they were, of course, but they were not. There was no implicit assumption "you are female, therefore you should dance/be sexy/do chores" involved.
The specific complaint I read was "This is the first fucking time I've felt this unwelcome at a games event. I know it happens and it shits me." Well, why does she feel unwelcome? Perhaps, more importantly, the question should be: how do we resolve that? Those who get offended love to complaint about these sorts of things, but they seldom offer constructive suggestions to resolve the issue.
Does she want male dancers alongside the female ones? Easily done next time, with a hearty "mea culpa" to boot. Fair is fair, after all, but...
Is the problem instead one more fundamental? That she feels alienated by things which are stereotypical of masculine culture (female dancers,) and wants not to see them, not that she wishes to have her own equal treatment in the matter? I mean, if that's what she wants, okay, I guess...
But it's a step towards the beige room. And honestly, who wants to have a "party" in a beige room with the Elevator from Ipanema playing?
Nobody wants the Elevator from Ipanema. Nobody wants a beige room.
I also noted, particularly, the following comment: "Fuck you xbox & your fucking "dancing" girls who are here to talk to the boys (You're not men if you buy into that act) #GDC16"
This is an astonishing level of hostility and, indeed, sexism. This I find saddening from someone who is purporting to support gender equality (which is what feminism is *actually* supposed to be about,) as it should be no more acceptable to label a group of men "boys" than it should be to label a group of women "girls."