Heartily disagree. A lot of professional journalist-led podcasts are really excellent. And the audio format is concise without being distracting. It's basically the on-demand version of classic talk radio. I crow a lot about On the Media which is fantastic journalism. There's loads of other similar content that varies from topical to human interest. Stuff like This American Life or Radiolab or How I Built This or Planet Money or more niche stuff like Cyberlaw. Kara Swisher is great too.