I agree that it can look like that at a glance, but why would we expect spending to reflect horniness when sexual expression is less accepted for women in many rich countries? Can you say to what degree that affects it? They may feel just as much hornyness and express it more privately. How can you be confident?

I admit, that if you look at the economic you presented, men spend more on sexual stuff. That is a fine conclusion. But it says very little to me about who is more horny.