***/****starring Joaquin Phoenix, Pedro Pascal, Luke Grimes, Emma Stonewritten and directed by Ari Aster by Walter Chaw The problem I have with Ari Aster movies is that Ari Aster is contemptuous of his characters. He gives them anxieties he then maximalizes into catastrophes so extreme they’re funny. (How else does a cake allergy turn into a telephone-pole beheading?) And once he creates an unbearable situation, he scoffs. It’s tempting to draw a corollary between his work and that of pos...