I think I get the "guilt-ridden nonsense" the parent is talking about. At the bottom of it is the West's (and by West I mean US, Canada, and Europe) perception of everyone else as third world and somehow the West has to "save" the rest of the world.
So, the depiction of cartoonists in "Asia"* as being in what can be aptly described as one of Dante's circles of hell is really condescending. It is a trigger for Western guilt; that idea that the rest of the world is suffering for us, when in reality, a place like South Korea isn't much different from the US.
To put things in a different perspective, S. Korea's GDP is about the same as Spain and they have about the same number of people (49M S. Koreas vs 46M Spaniards). But, you would never depict Spain in the same light as South Korea.
*As an aside, as a person of Korean descent I already knew that the Simpsons was produced in S. Korea, and wasn't particularly happy with the depiction either. Maybe Banksy has been to that side of the planet and was really playing it tongue in cheek, but I doubt it. For me it fits hand in hand with what I've noticed about many of my white friends: Asia is still some ass backwards, third world continent, and differentiating between the cultures and countries is too hard. Its easier to lump all black hair, chinky eyed people together to form a homogeneous group than to understand even the basic history of the region.