Metalcore, in general, is a more mainstream act. Metalcore has influences from new genres of rock such as hardcore and post-hardcore, thus the name "metalcore". Metal purists will find it hard to accept it cos metalcore just doesn't feel like metal to them.
And I'm one of them. But I don't really boycott it. I'm just against it.
tbh, i dont know why metalcore is being so frowned upon...i mean, its still metal, right? okay, maybe the purists never considered it to be metal to start off with, but what other people think of it and what it really is, can sometimes be really different. and in this case, i think its true.
figure this out, listen to some so called "metalcore" acts...dont really know how you define "metalcore" or what bands are considered "metalcore" by your definition...dont tell me they have no metal influence. =/
thrash metal (slayer, metallica etc etc) has influences from hardcore punk as well...so why arent they called metalcore?
i listen to alot of stuff, i dont know if you want to call me a metal purist, i listen to alot of thrash, death etc etc...but i quite enjoy some metalcore acts as well.
and yea, you guessed it, im not against it...
anyways, no offence, just trying to state my opinion. cheers.