If having songs that aren't strictly metal on an album disqualifies a band from being metal there are a whole lot of bands that would be disqualified. Opeth, Amorphis,, ok so most progressive metal bands you can name... and quite a few bands that aren't prog probably. Hell I've even heard melotic death metal bands have balads or slow songs. Are you arguing that any band that don't stick to a single metal formula aren't metal?
so close, no matter how far.
9/21: Uproar Festival