Yeah, that's always a good thing to know when someone states they dislike a band...do they even like similar bands or even an entire genre of music? And if they don't, isn't their dislike of that one particular band...sorta cheap? I think so.
Just my opinion.
Not necessarily. I can think of a few bands that I absolutely *hate* that are within I style I don't care so much for. It's not cheap. You like what you like and you hate what you hate. Sometimes there's plenty of stuff that you dislike in between, so to speak.