Yo Jackson, you're right in saying that Killswitch Engage are a fucking terrible band and a cancer and all that, but metalcore is already a thing of the past for the most part. Deathcore is the trendy plague fucking up metal right now, metalcore was fucking it up more when I was first getting into metal in like 2003 and 2004. All the major metalcore bands have either dropped off the face of the earth or changed their style enough to not suck anymore (obviously excluding KSE). I'd rather hear a shitty Killswitch song than any deathcore song any day.
Mortals are mortar and life is the fuse.