For me, Most of the woman are busy doing household chores, and irritant to invest a business without assurance especially in dealing crypto's. In traditional mode of way of living, The role of men are usually the breadwinner's, The wife's or the Mother's are the nurturer and assist the father to guide the children to become mature and independent. The Father are the protector and provider of the needs financially:)
I do not in which century are you living. I see women working in all fields and doing even better than men in some areas. I think women are more calculative and thus they do not show much interest in risky bitcoins investments. Regarding taking care of children and doing household work, this is something that should be shared between both the partners if they are working. On the other hand, men always like doing wild things and taking risks. As a result, they do not mind spending some money in bitcoins.