I find it quite counterproductive when people refer to some data, research or events without providing any links. This way we need to look for it ourselves before actually discussing the topic or assume that the claim is true, which many people do, but I think isn't ideal. I've seen
data that twice as many men invest in cryptos as women, but that's, like, 66% vs 33%, nowhere near 90% vs 10% or even less than 10% as the op's suggesting. There's some gender gap in men investing more than women, some gap in salaries, also the ratio of
3:1 men vs women in tech.
That's just the world we live in, the world that's still full of societies that have many stereotypes and a lot of social pressure regarding what is and isn't fitting for women to do. Of course, the world is changing, but it's a fact that the vast majority of the world is still far from gender equality. You can see hints of it even in this thread, in claims like women being into beauty and kitchen, husbands being the heads of families, etc.