I don't see the problem with the fair. Women are incredibly underrepresented in IT. Creating a space for them to join the industry or create connections seems healthy.
This sounds like the argument of rich white kids complaining about black kids getting the scholarships. If you want to balance an unbalanced system, you have to give incentives to the afflicted group.
I work in IT and I get at least 2 job offers every day in LinkedIn, why the F would I invade a women only fair to prove some point? Let them have something... It's not like this will affect men in the industry.
I'm so grateful for living in a society that lacks this technology. Imagine being arrested out of nowhere because a machine said you were going to do something bad in a year from now.
Hell, imagine not even knowing what you were going to do, but the algorithm said so.