I've heard about different degree of retention to different teaching approach in male and female. But when it comes to finding educational materials and learning, that should not differ among the sexes as they could do that in their own way.
The lesser number of women investing in crypto could rather mean the difference in spending and saving habits of the male and female, the power to make financial decisions and the need to justify their expenditure. Male tends to be more risk takers than female in general.