In actual fact, there is sufficient evidence that Banksy doesn't actually exist and an individual, and I proved to myself with a simple Google search after watching the opening screening that "Mr. Brainwash" is most definitely is fictitious.
As far as a movie production, I thought it was very well done. But yes I agree, it is far removed from the soul and reality of graffiti writing.
I believe that the misrepresentation and journalistic injustice was very necessary, just the same way it is necessary on major news networks. Think about it, most people don't want to go to a theater to watch this shit:
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I mean, it's pretty G, but whatever.