That was always a little exaggerated IMO, but in the 20-something demographic, yes. SF feels like a giant frat party right now. At an all-boys school.
If you're 30+ things are less bad just because of the basic demographic realities of single life. But my friends from NYC still laugh at the dating scene here.
A buddy of mine had a theory that the lack of acting and fashion industries (compared to LA and New York respectively) had a significant negative impact on the overall attractiveness and gender balance of the general SF population.