I dislike Justin Beiber. Everything he has ever said, done and or posted has reinforced that dislike. But the number one reason I dislike him is because his fanbase disgusts me. His entire interaction with them disgusts me. When he was caught smoking pot, his fans literally slit their wrists and posted it on the internet because they had to hurt themselves to protest Justin "hurting" himself. The man obviously has no issue with pot, but found his hands tied because he had to pretend to be repentant. He had used the same platform disney used with the Jonas brothers, marketing sex to little girls while disguising the whole production as a wholesome family event. And because of that he lied about his beliefs to keep his insane delusional fanbase.
I think that the quality of the fans does represent the quality of the item in question at least to some extent. But in all things it's important to be subjective.