[crank]

nope, doesn't sound rude at all.
you made my point for me (although i skimmed)

but a painter who paints portraits: artist
painter who paints walls: craftsman.

are there terms?
Does it matter?
photographer who photographs for a living: prof. photog?
photographer who's an amateur: amateur photog?

are there any rules? sounds like you are basically saying everyone is everthing all the time. no?