I mean, just look at us. That being said, "we" have only been domesticated for a rather short period of our history on this planet. Prior to our domestication we were living with all the other animals out in the wild, so, yup, we too have sexual dimorphism. This leads to certain attributes/abilities that are stronger/weaker in each sex. I do firmly believe that anyone, regardless of gender/race/origin should be allowed to be happy and pursue in whatever direction they want regardless.
But, I think that the pathway to co-ed STEM is to integrate men/women early on. So that way if a man/women looks at a resume when they are in a hiring capacity, they gloss over gender/race/origin and go straight to qualifications. Those old-school legacy things like boy and girl scouts are, in a way, part of the problem. I also remember school teachers also emphasizing gender based roles, as they too, were also subject to the same. So, we need to take a look at the school system again and find a way to solve the integration issue there.