Alright, why does nobody realize that deathcore is a subgenre of metalcore, which is all in all a subgenre of hardcore? Metalcore = Metallic Hardcore "A combination of Hardcore Punk and Metal that began to take shape during the mid 1990s. What differentiates Metalcore from other combinations of Metal and Hardcore Punk, such as Crossover Thrash, is the emphasis on breakdowns and greater use of dissonance.". Then deathcore would be a fusion of death metal and metalcore.
My point is that people don't think hardcore is metal but they don't realize that even metalcore is influenced by hardcore. And overall shrugging a band off just because you don't consider them metal is stupid. Some of the most extreme bands in the world are immediately mocked when they end with the core suffix.