"It is what it is" only because we're still getting out of the dark ages where women were being held back. I'm not saying that it will gravitate towards 50 percent and then stay there, but it will certainly change.
These studies are only trying to explain why there are differences between the sexes. This is news for nerds, stuff that matters. Personally I've always wondered exactly why I've found I could handle multiple projects much more easily than my male co-workers. Just getting a "you're a girl, duh" response is pointless. Back that up with some research and now you're cooking!
Also, this could also show why a corpus callosotomy can be more problematic for females than males.