True, but he quickly retracted that comment and admitted that it was something he said in the heat of the moment without thinking things through fully: http://krugman.blogs.nytimes.com/2016/11/11/the-long-haul/?_...
I imagine if he will retract this.
Krugman keeps making wrong predictions without almost never acknowledging it, and contradicting himself in a grand scale. His contradictions are documented by a dozen of economists blogs. It's amazing how people keep listening to him.