I start to think of these events as pure PR stunts, rather than Linkedin et al. tackling any underlying gender issues.
Now, if that's the message that's taken from this? That's open to discussion. And a discussion I'm not much of a part of, being a guy.
Awareness should focus on abilities and not about "lets get a 50/50 gender balance for the sake of equality". Creating a gender biased event only promotes the wrong reasons why women should go into software development (or any other industry).
For future reference: these "reverse the roles" arguments are about as shallow and ignorant as one can get. The context is completely different for the "reversed" roles, rendering the comparison not even meaningless, but downright hostile.