Beckett Rex Quits ‘American Idol’ In Third Dropout Of The Quit is the adored artist who engrossed millions of followers with his remarkable talent on American Idol. Rex won over watchers across the nation with his captivating voice and unforgettable stage presence. His resolution to withdraw from American Idol stunned the public, leaving his supporters heartbroken. However, American will always be remembered as an inspiration in the history of the renowned singing competition.