Isn't this simply to increase female participation? What does it have to do with "women are victims" message?

Nightclubs are known to offer free entry to females. Isn't that to increase female participation? I don't think clubs are victimizing anyone.

Maybe you are right in this case. However, nightclubs need women because a major reason to go there is to hook up. What is the reason to bribe women into showing up at hacking competitions?

Actual cynical me thinks "more sexy workplace" is part of the unspoken motivation for the "more women into programming" movement. But I don't think that is the official message they want to send out...

What's wrong with that? I'd prefer more gender-balanced workplace. My sister is a teacher, and she says female workers in female-dominated workplaces have pretty much same preference.

how would these women feel about paying men a little more to enter their fields?

women ARE victims. They are victims of society, and their parents who grew up with rigid rules of what a woman should be and raised their daughters with those rules in mind.