Via
this page of Joss Whedon quotes:
It’s better to be a spy in the house of love, you know ? . . . If I made ‘Buffy the Lesbian Separatist,’ a series of lectures on PBS on why there should be feminism, no one would be coming to the party, and it would be boring. The idea of changing culture is important to me, and it can only be done in a popular medium.
On the whole, I'd greatly have preferred the lectures.
ETA: Since I'm here, this vid is very, very good at showing the problematic nature of some of Joss' work:
My Medea by
yunitsa. Many thanks to
rm for helping me find it again.