Personally, I've never seen the need for a folk image. I suspect it's another one of those things folkies love and the rest of the world is alienated by. If by folk we mean the post-war folk revival genre, then yes, it may be heavily tied into the mores and clothing of the 60s and 70s, but that will die out with its originators. Revivalists will look like present day mods, rockers or civil war reenactors, someone to have your photograph taken next to in the absence of a man with a monkey.

Should there be any doubt, I'm entirely pro dressing up, so long as the dressing and the thing itself aren't confused.