In an era or big data and information, it's pretty easy for a advertisers to determine how target you. You show up as a 23-year-old female, and they feed you a lot the ads related to fashion, celebrities, and makeup. Things I'm not really interested it...
But put an ad for cheese in front of me, TAKE MY MONEY.
See? I have the tastes of a 50 year old woman. And what I love is not necessarily what I "should" love for my age.
Netflix came out with this exact idea. They stated that geography, age and gender are "garbage" for determining interest.
Seriously though, what determines what people like to watch?
I have a guy friend who binge watches the Bachelor. Meanwhile my grandma is obsessed with Breaking Bad. It just doesn't make sense to relate gender and age with tastes.