“Dietland,” Reviewed: A Bleak and Giddy Subversion of Beauty Myths |

Some animated scenes in “Dietland” (airing Mondays, on AMC) figure its protagonist as a downcast lump. This is not precisely an image of the plus-sized heroine, Plum Kettle—it’s more like a rendering of the woman’s self-loathing self-image. Drained of the…