"Just as much as you wonder
'Bout me starin' back at you
That's just how much I question
The corny things you do"
Think of it: At one point, this justification needed to be given because the illusion of mainstream normalcy was that pervasive and unanswerable. "Weirdness" even in the mid-1960s was still tantamount to perversion in the broadcast opinion of that mainstream. It took vanguard, virtuoso weirdos like Frank Zappa working in the subversive new medium of rock and roll to open some space to breathe.
Did he use aggressive, confrontational tactics to sledgehammer open this space? No, because that wouldn't be very weird at all. Zappa used something entirely uncharted to make his impact - he devised some of the strangest songs on record to bee-bop into the staid silence. He demanded his breathing room by just standing proudly where he wanted to and staring dementedly at his neighbors until they just backed off a bit. Revolutions start off as battles over inches.
This is a winning tactic because it's almost a certainty that every person knows in their heart that, for everyone who prefers a certain lifestyle and personal aesthetic, there is someone who is the balanced opposite to that. People may gripe and have a problem accepting it fully, but it's also indisputable. It's the yin-yang. The hipster looks at the redneck and thinks, how can somebody have such abysmally poor taste? The redneck looks at the hipster and recoils in exactly the same manner. And neither party is less entitled to their perception. And neither party will magically disappear despite the other's wildest wishes. All we can hope to do is make others aware that other ways exist and hope that the qualities of American democratic egalitarianism take over and do the bare minimum from there.
Frank Zappa is an essential 20th century artist not just because he discovered a novel tactic for social commentary. The quality of his musicmaking set him apart, gave him his platform. His songs are other-worldly ridiculous in a way that is so imaginative and skilled that they demand to be taken seriously. For as astoundingly dumb as "You're Probably Wondering Why I'm Here" is, it is also a little gem of melody, rhythm, and instrumentation. The time signature gambols along an expert series of changes, and the wild gearshifts in style jolt everything probably down to the posture of the performers.
This is a place for someone to just blurt plainly "Mom, I tore a big hole in the convertible." Because that is, in fact, exactly what you'd tell Mom and Pop.
Why beat around the bush here?
When you're an inventor, you throw out the unnecessary, the inefficient, the sentimental, and the remnants that have run out of time. You are evolution.