In addition to Fox and Breitbart, the Washington Post, Buzzfeed, CNN, and even the New York Times have had to retract dozens of viral political articles over the last two years. The retractions were only seen by a fraction of the people who saw the original headlines. This is an inevitable result of journalism increasingly relying on rumor and catering to partisan audiences.

Where is this line that should be drawn, and who should draw it? Breitbart may have a higher frequency of “oops someone gave me bad info, or my reporter/editor made an unsubstantiated inference” events, but their audience is much smaller than the large outlets.

Sure, but the parent's point is that even if you got rid of the fake news, you'd still be able to spread plenty of propaganda and sway people. Going after the easy target of "fake news" might feel good, and even do something to help make propaganda less effective, but isn't going to make a huge dent in the problem.