Say what you will about Dismaland, Banksy’s new theme park, but its tagline—“The UK’s most disappointing new visitor attraction”—might be the rare claim that the artist’s fans and detractors can agree about.  Dismaland reimagines Disneyland as a rotting hellscape. Its perimeter walls and Magic Castle are dirty and crumbling. The central water feature is murky and home to a partially submerged SWAT vehicle. A sculpture of The Little Mermaid’s Ariel is a 3D rendering of retro cathode ray television distortion. However, in a statement quoted in The Guardian, Banksy insisted that Dismaland is not really about Disney: “I banned any…