There was a time when all avant garde black metal bands were either mimicing Deathspell Omega or Arcturus, good thing that stopped. But even if that sorta thing happened, there is always a new term to describe the weird stuff.
well nowadays, a nu metal band is a band that sounds like other band that has already the lavel, like alternative. They are recursive genres. But when Limp Bizkit first coined the term the intention was that