He wouldn't be the first artist that found the process more satisfying than the result, and frankly, I'd imagine he was seeking to inspire conversations such as this one; conversations concerning the legitimacy of his work.
I mean, that's really the whole idea, isn't it? Moreso than creating art isn't he aiming to make statements, anyway? It's not as if anything he's doing isn't utterly cliched. Don't get me wrong, I think it's super fUcking cool and all, but the work itself isn't; it's the presentation. It's not beyond simple graffiti, it's just simple graffiti painted by a man who could be making lasting works if he wasn't such a rebel.