English Conversation: All Metal Fans Must Be Rowdy and Impolite?

A: Do you still like metal music?

B: Yes, I do. For me, it's a good music to reduce stress.

A: That's weird because metal music is very noisy. How can we reduce stress by listening to something noisy?

B: Don't listen to it in high volume. Metal music can express our emotion.

A: You mean like anger or hate toward something?

B: Yeah... something like that.

A: Some people think metal music is against morality, ethics, and even religion values. Any comment?

B: Only some metal bands declare themselves that way. I think metal bands like that only have few fans. 

A: OK. Let's now see the metal fans. Most of them look ugly, rowdy, and have impolite attitudes. Am I wrong?

B: Not absolutely. I must admit... yes, some of them look that way. But, not all of them.

A: Some of metal fans are also alcoholic, hard smokers, tattooed, long-haired, and like to talk dirty words. Is it true?