Sure they are. Second wave feminism decided to include fat feminism under its umbrella in the early-mid 1980's. Things got even fatter with the current third-wavers. Women's lib joined itself to the lumpen, grostesque hip of the fat feminists and now they're inseparable, much to the consternation of legitimate feminists. Fatties poisoned the well of a movement that did much to bring about true equality for women.