I'm not denying that there are bands that do scary shit in metal, I just don't think it can really live up to what bands like Throbbing Gristle do. Though not always traditional, metal almost always has some form of structure, thus reducing its fucked-up factor - the fact that it's hard to comprehend what's going on in stuff like Throbbing Gristle's Heathen Earth, is what makes it so scary. Just my two cents, though.