I guess because I sit on the other side of that discussion.
Should we have to dumb ourselves down so an audience understands us Vs. Should our audience seek to improve their own knowledge so they understand more.
metal this, metal that. doesnt matter Some of Nightwish's earlier songs included much more growling. They are constantly changing between a bit of death metal, symphonic, folk, even downright pop/rock 'n roll at times xD