No it won't. Read the article at Alternative Press about the situation. I'm all for that bullshit music fading away, but "kicking their ass" won't solve the problem. Violence like that is for suckers.
Pennywise is just as popular as they've been since 2003. Not as popular as they were in the late nineties, for sure. But they're at a plateau and still have a solid fanbase. They've lasted for 20 some-odd years. Think about it. Whose the real success story? A band whose lasted 2+ decades with a relatively consistent fanbase, or some band selling a ton of records now who won't last more than three albums?
Even though I'd think its funny to see those bands take some beatings, I was just kidding.