I think it's important for us to gain some kind of perspective here. Whatever current science (or "science") says on the matter, that's not the point. These arguments seem to be of the following: women are inherently less capable of being good engineers, therefore they should be underrepresented in engineering.

Okay, now let's extend that argument out from the engineering sphere.

Using the same logic, the following attitudes should be accepted: 1. physically disabled people are inherently less suited to being mobile, so we shouldn't put in effort to allow them to be as mobile as non-disabled people 2. Men are inherently less suited for child care, so we shouldn't put in effort to help them be as good at child care as women

I wouldn't be surprised if some of you endorsed the attitudes I've just presented, but that would make you immoral by modern standards, so you could then assume that you're being immoral on the gender diversity issue.

This whole thing comes down to a fundamental lack of empathy. If you're not going to have empathy for women in tech, there's no reason that anyone should have empathy for you in areas that you're not suited to. So, if you accept one, accept the consequences of the other.