Admittedly, the masturbation story is just a "Hey, this is one of my best-of's, I'll throw it in the special. " But the grandmother stuff, really, I feel like is part of the theme and part of the best way to end the story that I'm telling with the special.
Overall there may be less censorship in America than in China, but censorship and self-censorship are not only from political pressure, but also pressures from other places in a society.