Look at the quote carefully, Artster. "According to people who have spoken to him," is exactly the same phrase used in tabloid journalism. And you'll note that the term "rage" isn't in quotes. So even if the sources are genuine, they didn't say Trump was raging. Maybe they said he was annoyed, or complaining, or silently stewing about it. From that the authors spun it into a "rage," as if Trump is storming around the Oval Office, breaking furniture. It's so much more dramatic than saying he was "peeved," which is what anyone would be.