Why are there no big deathcore bands with frontmen who play guitar on stage?

I cant find any deathcore bands with guitar playing frontmen, but it's easy to find them in almost any other metal subgenre. Why is this the case? 
'Cause -core vocalists don't know when to shut up and think more words and vocal styles they can cram into a song makes it better.
I've never found them because I try and avoid deathcore.
There's no such thing; there never was. Where I am going you cannot follow me now.
They're usually talentless hacks who put an extraordinary amount of effort into their surprisingly shallow image, hence their only ability is yelling and singing like a bitch.