I am talking about relative levels of sexism in the present, not in the 60s and 70s.
That they may be less sexist now, after having achieved gender parity or something close to it, is hardly unexpected. Of course a field with roughly even numbers is usually going to be less sexist than one dominated by one gender or another.
This is the crux of the issue that you're avoiding grappling with. Saying "well I don't care about the history" is irrelevant, it's still the most important part whether you personally care or not.
It's like looking at which countries are desirable to immigrate to without grappling with patterns of development, despite the obvious fact that the biggest thing that makes countries more desirable is being rich/developed.