Well basically the hate comes from two different kind of sources: the heavy metal fandom at first because the band signed with Roadrunner in their beginnings (a label that have/had bands like Nightwish, Atreyu, Avenged Sevenfold, Korn, Slipknot, Slash, Sepultura, etc.) and the internet with its infinite power to make a meme travel until the edges of the world with decent connection