This discussion is dumb cause a genre is not what you want/think,google metal genre and you'll learn what metal needs to be....................metal.
Oh to me this is metal and this is not = it's not you(or me) who decides what's or not metal.
It doesn't matter if you think Maiden isn't metal cause...........it is.
There are things which are part of what a genre is,they're its roots,its foundation.
Metal just like ANY OTHER GENRE is about,clothes,hairs,chord progressions,guitar tones,lyrics,attitudes etc,it's not ONLY about sounds.
Do you think if Backstreet Boys had heavy guitars they'd sound.........metal?
Because clothes,hairs,melodies and attitudes are different.
And just like any other genre metal has several sub divisions,Maiden and Slipknot have different sound but they're part of the same genre.
Whitesnake = hair metal
Kiss = classic rock
Deep Purple = Hard rock
Rob there are 2 kinds of metal =