Stereotypes can be profited from due to some reasons you listed (grain of truth, etc)

If women want to buy shoes, purses, jewelry, makeup etc... Then let them. I'm not arguing women aren't different from men; They are like day and night when it comes to purchase patterns.
Men don't give a shit about purses and makeup, and women don't give a shit about electrical stuff or hardware.

Sell female-oriented products with easily obtainable bitcoins and you're in for a massive market.

From a business persp., nobody should care  'why' they opt for those products as long as they have money to pay for it.
I for one don't care whether the revenue comes from someone with a dick or someone without. I don't care about the evolutionary psychology behind it.

The only relevant thing is they have enough money to pay for something marketable with bitcoins, which makes women an untapped market worth a lot of money.
If bitcoins were easier to obtain than Paypal funds or credit card payments, ordinary women would use BTC every day.