maybe women are lesser involved in cryptocurrency is it because women are having lots of responsibilities like doing the household chores and taking care of the kids rather than men that after their working hours they can have relax for a while....but let's not under estimate women today because now they are more competitive..
Still i think that in modern countries the number of women using crypto currencies may be more than backward countries. In modern countries women are also as such educated as their men are, while in backward countries people do not give preference to Female education which is much more important.