Zeihan over-reduces complex topics so that material can be squeezed into digestible youtube segments and when Zeihan makes predictions and they don't come to fruition, he simply alters his premise..."well, we didn't account for..."
Zeihan and Grossman should be viewed with the usual healthy skepticism. But good for them, making a living I guess.
An effect of our "TL;DR" culture is a lot of nuance gets lost.