BuzzFeed News is no more, but its former editor, Ben Smith, spearheading the new Semafor media venture, decided to reflect on the moment he gave the green light to post the infamous Steele Dossier. The document was unverifiable and has now been dismissed as anything but legitimate. This tranche of papers is what set off the FBI’s counterintelligence probe into Donald Trump, the investigation that formed the core of the Russian collusion hoax that later evolved into the Mueller investigation. The media circus destroyed the last vestiges of credibility with many reporters in the legacy media. No bombshell development ever...