douglas - // It's just a word that's been commandeered and made shorthand for something it isn't.
Like 'star', 'celebrity', 'classic', 'graffiti artist', etc. //
Absolutely - and like some terms in your list - it brings a massive and popular subsidiary industry trailing along in its wake.
Personally, just because I can't see this band or that band does not mean that I want to see strangers dressed up as them playing their songs.
If it's a Rembrandt painted by Phil Bloggs who dabbles a bit, then it is not a Rembrandt, and not worth looking at as though it is.