If that was directed at me (no quote, so I don't 100% know), it's a logical statement. We are allowed to judge people for things they do, say, support and are interested in, and act how we feel they deserve over that. It's no different than if you look down on someone for liking
Epic Movie or
Meet The Spartans or respecting someone for liking
The Daily Show or, inversely, disrespecting a Fox News fan. Musical tastes say a lot about someone. Would you trust someone's romantic advice if their favorite musicians were Justin Beiber, Taylor Swift and One Direction? I doubt I would.