What a misleading title! She didn't say she hates dance music, she probably is tired, as most of us are, of the techno/dubstep trend that is dominating on radio these days.
She was probably talking about the generic dance music you hear on the radio which shows no uniqueness or quality, not the dance music that is actually great, and will stand the test of time.
She could have said it differently, but she really didn't have to because I would think everyone would get what she was saying
