I think it's funny that you got hung up on the idea that it was a 'ladies only' event. I think the post you were replying to was referring to this part of the parent post:

  >  If you're a woman with a family, it's probably
  > preferable to carve out a Saturday morning, let your
  > partner (hopefully, if you have one) take care of the
  > kids and come home (not sloshed) to your family than
  > it is to head down to the bar after work to have a
  > couple of pints. It's just a lot more feasible.

Obviously the only thing that is holding women back from going to other tech events is that the schedules aren't 'family friendly.' This conclusion would only make sense to me if there were some evidence presented that most/all of the women at the event had families of their own.