Not your average M.
There's a couple of this kind of photographers in Madrid (Spain) where I live. I've talked to one of them several times. In spanish they're called "minutero". The guy says he does it to preserve a tradition. He's young, and had been a pro photog for years before researching this method of photography. He started doing his "ambulant photography in 2000".
His results are more "artistic" than the results from the Afghan guy. He uses sepia tints and some other tricks like vignetting to make his photographs look like they were taking a century ago.
Someday I'll tell him to take a picture from me and my father.
Some of his work:
And some info in english (his english page has less info than the spanish one).