And if it happens on television it clearly is indicative of real life?
"Friends" also happened on TV, in New York, and i'd say it's got a decidedly different view of the world and relationships (and it was certainly at least as popular as Sex and the City, if not more so).
And the problem is not whether it's intrinsic or learned behavior. You are ascribing things that are questionably true in the extreme to people who you do not know, and can not know the disposition of.
Pop culture certainly has some influence on the real world, but i'm afraid you are either very shallow, or very naive if you're buying your world view from a television show (or in opposition to it).
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Your concession that men could be equally unfit is rather hollow in the context of what you've said, particularly given the things you cite. Sex and the City in particular is a show with an entirely female main cast, and the show is about their lives. :p So i'm not all that mollified to be frank.