“MAHAspital” was a withering parody of the “Make America Healthy Again” movement, a fake promo for a TV show aimed at “people who love The Pitt but can’t stand its phony liberal science.” Naturally, it was brought to us by Robert F. Kennedy Jr., the TV personality and fitness trainer Jillian Michaels, and “the Facebook group ‘Beach Moms Against Vaccine Tyranny.’” (“‘Five stars,’ raves the Liver King.”) Though the sketch’s first target was the constellation of poorly qualified skeptics who now direct much of American health-care policy, its real bite lay in showing how reliant these contrarians are on the tropes of mainstream culture, not to mention the medical system itself. As SNL made clear throughout the evening, the parasitic relationship between self-styled truth-tellers and the establishment that feeds their outrage has become ever more absurd—and funnier.