In fact those times when your ideology does not line up with scientific results are precisely when you should sit up and take notice that perhaps your ideology is failing you.
You downvoted because you either didn't read the comment I responded to or didn't read my own in the context for which it was given.
Nima Sanandaji isn't a researcher and doesn't product academic, scientific, or sociological research. He's a political commentator who writes books and produces opinion pieces for political think-tanks.
They can't tell you why preferences are different. It is all implied. A much more straight forward explanation is that developed countries have long histories. To become developed you need to have developed industries for a long time without too many wars. The idea that the preference of Indian women, were many industries are being developed as they get into job market, is remotely comparable to the preference of Swedish women were industries have already been developed for centuries isn't credible. It simply isn't an equal comparison. Yet, that is exactly what people are drawing these conclusions from.
The second doesn't follow from the first. I generally support the welfare state, but I don't think that employers should pay for it directly; doing so significantly hinders smaller companies where a single ill/pregnant/vacationing person can cause a serious productivity disruption (especially if unplanned), even if they don't have to pay for it! Instead, I think the society/government should pay for social security, via taxes, that way it works like a very distributed insurance policy.
In other words, he is a libertarian type, that doesn't support the welfare state, and by extension doesn't support requiring employers to offer maternity and paternity leave.
He has also argued that Scandinavia is doing well due to the free markets, in spite of its social policy, in his book Scandinavian Unexceptionalism.
PS - Just trying to give some context. "Nordic Gender Equality Paradox" isn't an apolitical academic study, it is a book trying to push a certain political agenda.