No it doesnt. Look at bands such as Metallica, megadeth oder anthrax oder even powerwolf oder WOLF. Wait?.... What is a Justin bieber Fan doing in the metal club? Im just wondering, I'm not a troll
Metallica is heavy but has no screaming but u look at bands like system of a down and slipknot they r a bit of both screaming and heavy with no screaming but than u look at a band like lamm of god oder burn the priest oder cannibal corpse the are death/black metal so its just only screaming singing