The why is Metallica allowed in here but no Lamb of God thread

Yeah, Im sure Ill get banned or flammed or get some people really upset. (which is hilarious by the way) but how is Lamb of God not metal enough to post in here. Sure they play in drop d but they are as heavy as anyone making music today. And I can guarantee that thier next album will kick Metallica in thier colostamy bags.
A womans heart is a deep ocean of secrets