Although it's interesting, because I like being targeted. If someone organized a nearby tech event that was accompanied by a big rack of ribs and an evening of firing off guns into the desert, I'd sign up for that sucker in a heartbeat.

Perhaps that's because I would never think 'oh, the organizers of this event are just putting these activities together to attract more people like me' - the social engineering wouldn't be obvious to me, and if it was I just wouldn't care.

I wonder why the organizers didn't just say 'okay, this event has 50% tickets for men and 50% tickets for women'? That'd certainly be the simplest way of getting to the ratio they wanted, and it wouldn't involve mixing in other gendery activities.