The references to Donald Trump seem tacked if only for the sake of tacking them on.
Apart from a vague anti-U.S sentiment, it seems hard to identify what the author is complaining about that is already self-evident.
Some Americans believe in American exceptionalism: Duh.
The 2003 Iraq War was a mistake: Duh.
Donald Trump is an idiot: Duh.
Journalists/people tend not to admit their mistakes: Duh.
What exactly is the OPs point here?