I smashed my guitar in anger.
I wasn't angry about guitar when I did that.
I'm not too upset about the guitar.
The guitar wasn't smashed from guitar related frustration.

The only meaning I can figure for destroying an instrument is some kind of edgy provocative performance art.
You could have just estimated a value for the instrument and destroyed a pile of its value in currency with fire.
Less expensively, you could have just written a check for the guitar's estimated value, and burned that instead.