I agree. I know that some women are very good traders, but they are exceptions. Actually, it's an activity that needs some very specific psychological traits, most of them near to madness and obsessiveness, and there traits are specifically masculine.
And, for sure, as women are smarter than men, they let men to become crazy with trading.... :-)
Women are much smarter than men, so: why to make the effort to learn how to make profit with bitcoin, when they can smile to a man :-)
OK, just kidding. Women usually don't like trading because is too much like a videogame, and usually you stay alone in front of the monitor.
But I know some women that are fantastic forex trader, because they mix competence with female intuition, and have very good results.