And maybe the Eagles' "Witchy Woman" should be given a different genre name than their "Peaceful Easy Feeling" since they are so different!
Come on. We don't need to give some music a different genre just because it has more treble or bass or distortion or a different time signature than another piece of music. Some basic categories are fine, but let's not go overboard.
'needless' is debatable and shows a desire to be willfully uninformed.
Like, i don't really listen to black metal much, but I do like a lot of blackened death metal bands. I know what that means. Is 3 words too many for you to digest?
To add to the debate... when I hear "Math Metal", I either think of None-era Meshuggah or Dillinger Escape Plan. Not sure which one is "Math Metal"? Meshuggah is certainly more "Metal".