> The reason I am a sceptic is because as a Scandinavian I notice easily how much more macho men are in less gender equal societies and how much more feminine the women are.

I think it depends on what you're looking at. It is indeed true what you say. But if you look at % of women in tech, less gender equal societies will have relative more female programmers.

This is from my own experience as a Belgian married to a Slovakian, and working in tech with externals in Ukraine and other countries.

It is true that middle and eastern Europe have a more traditional gender division, and I found this article that shows my point: http://blog.honeypot.io/women-in-tech-germany/. Netherlands has the least % of women in tech, but I can tell you they don't have a traditional gender role division (just as in Belgium).

So to get back to your first point, I think feminine women don't necessarily avoid working in tech, while more emancipated women do. It seems counter intuitive, but it definitely points in that direction.