[Slamidan]

It's usually a false correlation as gender "equality" is usually not a cause of anything, it is the luxury of excess that allows a society to afford it. There hasn't been a modern test of where a society hasn't been forced to pretend at equality to see where the outcomes would end up, the results may even be better as productivity wouldn't be undermined to support an ideology.

[mcv]

Maybe it's better to say that many aspects of gender inequality are the cause of various things. We can analyse the differences between countries and draw conclusions from that. And it appears that countries where people are less likely to be discriminated or face restrictive expectations based on their gender, end up with better outcomes in terms of life expectancy, freedom, happiness, prosperity, etc. It's possible that some of those correlations aren't direct causations, but they're still correlations.