I’d say anyone who has clue. Tarkovsky has been nominated how many times? Fassbinder? Dreyer? Pasolini? Tarr? Herzog? Lubitsch? Bergman has won how many? Kurosawa? Fellini? Luc-Godard? Bunuel? Leone? How about Chaplin for either acting or directing? Hitchcock? Okay, Okay, let’s try the Americans; the great Stanley Kubrick has won one AA! He won it for best special effects! King Vidor? Orson Welles? Howard Hawks, one nomination! Lumet? Peckinpah? Anthony Mann? Fuller? How about actors? Oldman? How many times has the incomparable Alfred Molina been nominated? Turturro? Kilmer? Harry Sean Stanton? I mean Harry Dean Stanton: Paris, Texas - never nominated! Dustin Hoffman doesn’t win for Midnight Cowboy? Pacino in Dog Day Afternoon? Brando doesn’t even get nominated for Apocalypse Now? Marcello Mastroianni? The legendary Edward G. Robinson? Kinski? Joseph Cotten? Charles Bickford? Quite possibly the greatest actress ever, Liv Ullman, has never won? Barbara Stanwyck nominated 4 times, never won? Hanna Schygulla? Joan Bennett? Let’s see who has won: Tom Hanks 2; Spielberg's resume suggests he is a superior filmmaker to Tarkovsky? Are you kidding me? Other winners include: Jamie Foxx, Nic Cage, John Wayne, Clooney, Cuba Gooding Jr, Mo’Nique, Angelina Jolie, Jennifer Hudson, Sandra Bullock, Natalie Portman, Halle Berry, Reese Witherspoon, Cher. Meryl Steep has 17 nominations? 17! Need I go on?
You are simply referring to personal taste. Many great talents have still won Oscars and you're simply butthurt your favorites haven't won. Nothing more. Shame as it is for some of those who you listed (Chaplin and Kubrick especially), it doesn't mean the Oscars are shit. And Streep can outact most actresses, so you might wanna choose someone else to call out. It's all about taste, you haven't proven anything.
And for someone who doesn't care for these awards, you still appear on the threads. Nice.