A derogatory term used when talking about new wave of Black Metal (namely American bands) remarking shift in lyrical themes from death and darkness to nature and loneliness, and improving the quality of production. Used mostly by Black Metal purists so they can distant themselves from people the consider "untrue".
Person 1: Been listening to some Black Metal recently?
Person 2: Yeah, found out Agalloch, and absolutely love them.
Person 1: Man, I asked you about Black Metal, not Forest Rock.