from the 80s there were huge advances in mainstream feminism. For many people it was around 1998-2008 that a lot of people in their circle became feminist

The fact remains that there are more women studying engineering (not just CS) in less egalitarian third world countries than in progressive western countries, despite the latter having campaigns, funding, etc.

The idea that male and female primates (including humans) have different ways to look at the world seems very sensible to me, and that would explain why "women care more about people" and "men care more about things".

That wasn't the argument I was making. Please don't change the topic. I don't dispute that there are more women studying engineering in said countries, what I asked you was a very specific question.

Why did Computer Science of all STEM degrees face a drop in female graduates versus the others?

And if you're making the argument that 'women care more about people' and 'men care more about things' then I'm going to disagree heavily considering it doesn't relate to modern day software development. Current development is highly collaborative, constantly dealing with other people whether it's customers or members of your team. In fact, back when CS was at its peak of women obtaining CS degrees, that was when CS was more focused on things and less on people as a result of software still being a niche and local thing. That argument doesn't work considering the history of CS as a whole.

I think the answer to your question is precisely that, with all the campaigns in the west telling women to follow their own path, do whatever they want, etc. they ended up predominantly choosing careers they actually like (nursing, teaching, anything that has to do with people)

There are always exceptions, obviously.