Bullshit. There is tons of great Hardcore & Grindcore. Deathcore/metalcore is over now anyway so yeah.
I don't believe Metallica deserves to be part of the big four when you've got bands like Kreator.
Exodus is fucking awesome and Bonded By Blood destroys Kill 'Em All.
Exodus? People listen to that band?
Bonded by Blood is quintessential thrash metal material. And people who still give a shit about the "Big 4" need to not be 15 years old.
Sodom is also better. And Exodus would displace Anthrax anyway, not Metallica.
Good Grind would make the 1% which isn't lame.
Yeah, I'm a fan of most of those bands you listed Kafka, but the amount of garbage among the metalcore, deathcore, and "hardcore" is staggering.
Pig Destroyer were actually one of those bands that got me into extreme metal, and Prowler in the Yard is intense and great.