"I don't like X" is of course not an absolute statement (and neither is "I like X", for that matter). I don't like Hip-Hop. Of course there is some hip-hop that I think is alright, but by and large, "I don't like Hip-Hop" is accurate.

Different people are different, and different things resonate with different people. I find snobbery highly obnoxious, but to be honest my opinion of this kind of dismissal of different people liking different things with a fairly condescending "you have simply not understood it" is not much better.