This shouldn't come as a surprise to anybody. Apart from those who buy into the world view that the only two groups in any society are the oppressed and their oppressors, which is clearly just toxic bullshit.
Given that the leader of the free world has said that he's not a feminist, I'm not sure I would say that it's ingrained into the culture. It's a recent cultural phenomenon of these countries, sure. But Western civilization has a much deeper culture of patrilineal succession, of the priesthood being restricted to men, of only men having political representation, of the father being the head of the household, etc. That stuff doesn't evaporate from a culture quickly, and even today many of those are strongly believed by huge parts of Western civilization.
These are the countries that are the most egalitarian in the world, where 3rd wave feminism forms a major part of social policy, where women have an equal level of opportunity to men and the freedom to choose their own paths in life. The data shows that under these conditions, this freedom has a negative correlation to women choosing a career in STEM.
You can't say that this is a remnant of some patriarchal system of oppression, because as women's freedom has increased in those countries, their participation in STEM has decreased.
Which part of the parent comment was a "marxist talking point"?
However, I'll indulge you and hazard a guess:
* The historically naive and somewhat incorrect generalization of some ill-defined "Western" culture (what time frame is he using?) * the negative portrayal of it * and the implicit assumption that any part of the portrayal is somehow unique to all Western countries, but not the rest of the world.
I will give you that this criticism of "Western culture" probably doesn't really relate to traditional Marxism, which more or less worked within the framework of Western culture.
I believe your parent might have had the concept of "cultural Marxism" in mind.