Earlier quoted context omitted.
ight bet that doesnt invalidate the fact that metalcore isn't metal, since it's rooted in punk hence, metal core
metal isn't metal, since it's rooted in punk. FACT Extreme metal rooted from Discharge. Sounds close enough anyway. Crossover thrash isn't metal because it has punk on it, too? Regardless, this is just pedantry.
Funny enough you mention Discharge... most contemporary DM bands dress (and have a few songs) that sounds like crust bands ~1982