In an interview with Metalhammer, Metallica drummer Lars Ulrich spoke a bit to the outcry, calling it "ridiculous" and referring to his band as "fairly thick-skinned."

"Glastonbury, it's like the Holy Grail in England, and we're respectful to that," Ulrich said. "But if somebody sits there and talks about petitions or what some other guy says, there's a point that it just becomes ridiculous."

The band has made waves in headlines recently not so much for what they're doing but for what others are saying about them. Turner called the decision to let the metal act headline "out there," while lesser-known act Mogwai had some words as well, one member calling out Ulrich's drumming abilities: I can't wait to hear that guy play the drums again - unbelievably bad."