Death metal is arguably not music. I mean, it seems to be mostly about the energy of music because the words are incomprehensible and when you find out what they're saying, you realize you were better off not knowing.
Death metal is not music? That's quite a load of shit. Go listen to Necrophagist and you tell me that they don't have skill. if you can't understand the lyrics, then go look them up. not a big deal. But to just say that it's not real music because of the lyrics is retarded.
I will slightly agree with you however. To the untrained ear it probably doesn't sound like music.