It’s both a little stale and a little overblown.  

The populist wave in the US is already waning, and both Wilders and Le Pen were defeated.  My own spin on Brexit is that it was predicated by economic self interest rather than populist xenophobia.

The author is correct in saying we are entering an uncertain time, but some of the rhetoric goes a bit far IMHO, and that includes the comparison to the fall of the Weimar republic (which is flawed anyhow.  Immediately preceding the rise of the mustachioed one, Germany’s economy was in tatters and the entire country was smarting from the ill-thought Versailles treaty.