"I just think it's a little disrespectful to go out and be playing shows or have groups of people and have everyone sick you know?" he added. "I think it's a time to just make great music and lock in and you know, twelve months from now go crazy."
Pictures from last week's Smash Mouth gig at the Sturgis motorcycle rally showed very few people social distancing, and little-to-nobody wearing a mask.
"We're all here together tonight — f--k that Covid s--t," frontman Steve Harwell told the tightly-packed crowd at one stage.
But according to Barker, artists have a responsibility to their fans to keep them safe.