Skiggath wrote1, Metalcore is detrimental to the genre as a whole as it draws ignorant fans in their early teens. Also, I can't stand most of it as most of us would agree. There are many mistakes being made in this genre.
I don't know, but at least - attitude, image, outfits, looks aside - it's IMO the least sucking new metal genre after 1990. Grunge, Alternative, NuMetal, Crossover, Emo etc. are IMO all worse.
And if you are looking like Tokyo Hotel and playing like Slayer... just look at Sonic Syndicate... if you hear them, you'd never think, that they look as they do.
But anyway I am wondering why it took ca. 20 years that bands like Warbringer or Evile are coming too the scene, while in the 90s we've had to bear wimped out watered down classic thrash bands and alternativ BS?