When the bar is lowered SO far on the term 'musician', to the point where you don't actually have to play ANYTHING and you can call yourself one, that's the time the term has lost all meaning whatsoever.

Now, anyone with an inkjet printer and stock art files is a 'painter', anyone with an e-book reader is an 'author', and anyone that can push the 'Play' button is a 'musician'.

O tempora, o mores!