A single act/belief/moment does not define one's character.

And (keeping in mind I'm very tired) is it such a bad thing to be a little bit sexist/racist/blahist? I mean, if you're aware of it, or the fact that you worry about it at all, I would regard as better than people who think they're not at all biased. Being completely neutral in the real world is an absurd premise.

Liking a show that someone decibed as sexist, to my mind, is more like "I once drank tequila, does that make me Mexican?"
I'm too tired to explain that metaphor, so I hope it makes sense.