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They probably think their opinion of how much it sucks is more important and more powerful simply because they are a "huge Metallica fan." If I'm right, then they really should stop it.
Why? If anything, it is quite a powerful statement when you put it THAT way. If something is SO sucky that even the diehard fans of the band can't help but acknowledge it, that has to be saying quite a f'ckin' lot.