"Credible"? Credible about what?? About the sound you make??
Look, I know guitar players don't like the idea of people trashing their guitars onstage, I understand that. And I respect it, you think every guitar is a work of art, alright.
But come on, nobody can deny that when you go attend to a concert, you're not there ONLY FOR THE MUSIC. You don't just stand there with your eyes closed, listening and thinking "hmm Mr. Laiho seems to be developing a very unique technique", fuck NO.
You are there for the fucking SHOW. You wanna have a great time! And that's why I love Alice Cooper so much, the guy UNDERSTANDS that. He always did! Now, when you ask Alice what he thinks of Marilyn Manson, you know what he says? "I think my show is scarier AND funnier". And also: "I don't wanna play for an audience that actually forces itself NOT TO HAVE FUN at a concert. I want them to have a blast!".
Nowadays we have fucking SHIT Slipknot and Marilyn Manson doing a show with lots of effects to an audience that has grown to "behave COOL", and that wants to feel numb about everything. Cause being numb is good, it means nothing affects you, you're above everything, you're superior. Tell me if kids nowadays aren't just like that. Little self-righteous pricks you wanna punch in the face.
But rock back then, it was about ROCKING YOUR AUDIENCE. And the audience WANTED THAT, they were open to it! People felt not only the music, but the fantasy of the concert! Eddie in the stage, Alice Cooper dying and coming back to life, and yeah, the guys from The Who breaking their fucking guitars, Hendrix setting it on fire. If the show asks for it, then go for it, all in the name of leaving your audience screaming with their clenched fists "FUCK YEAH"!
Nowadays, I think people have painted themselves in a corner where they have to be overly rational about things they're not supposed to. "It's gay to break guitars onstage", hell no, as Lemmy would say "it has to be dangerous, man. Otherwise it's not rock and roll".
So personally, I don't care if someone breaks their instruments onstage. For me, I'd rather watch the band set the entire stage on fire then attend to a lame concert where everyone plays perfectly but look like zombies onstage. If I can have both, then all the better!!!!
But that is
just my opinion.