Claim: a weekly Australian crime podcast that was  first aired on 9 January 2016 after the host came up with it after having surgery and he remains anonymous was called Casefile True Crime Podcast
Evidence: Casefile True Crime Podcast, or simply Casefile, is a weekly (sometimes fortnightly) Australian crime podcast that first aired in January 2016 and hosted by an Australian man who remains anonymous. 9 January 2016 – present The podcast first aired on 9 January 2016 and was conceived by an anonymous Australian host who started producing the show in 2015 in his spare room. The host had just had surgery and was listening to a lot of podcasts and true-crime shows (e.g. The Joe Rogan Experience, Hardcore History, Serial, and Making A Murderer) at the time, and felt encouraged by Joe Rogan to make his own based on in-depth research and a storytelling style.