There's been so much chat about Phoebe Bridgers smashing up her guitar on Saturday Night Live last weekend. The guitar press is still chatting a bit about it. A bunch of folks think it's simply disgraceful behaviour.
Wrecking instruments during a performance is such a long-standing practice that there's even a Wikipedia page.
It's almost as if the problem with what Phoebe Bridgers did isn't so much that she smashed a guitar as that... Well. Have a read of that Wiki page and see what you think.