Everyone getting the same chance means 50/50 hiring because believe it or not, women do want to work in all fieds; the current 70/30 soon goes down to 50/50 from there. And yes, men do want to work in healthcare and child care and education, surprise. Why do you need to make sure they can't? Because that is in fact the same process that happens, one side is actively shunned from some jobs and the other side gets shunned all the same, even though there are people on both sides who do want to work in both types of jobs. The reality that you pretend doesn't exist is that there are 10 women who want to be an engineer at the beginning of their education and they get stomped down to 1 until she gets passed over for some 10 men who at first wanted to work in healthcare but were bullied into engineering. This 1 woman to 10 men scenario is your own creation.
It takes actual work of being unfair to maintain the imbalance you benefit from. Man you don't even understand the math of your own argument, maybe the women who get hired over you actually are more skilled.