In spite the fun everyone seems to be having feeling vastly superior to whatever lettered this thing, if you actually look at it the thing has a kind of down home funky charm all its own. The execution doesn't appear to be done by someone with their finger dipped in paint.
I notice that this guy is commanding what, in my village, would be somewhere close to premium prices for his wares. Perhaps it's all by design. More likely than not it's exactly what it appears to be but appreciate that that probability is less than one.
Maybe it's like one of those things that if done by your nephew drooling paint on a board it's worthless but the exact same thing, splotch for splotch, done by Jackson Pollack becomes a priceless objet d'art. Or not.