Earlier quoted context omitted.
Not going to fully defend the OP but the problem is things like the USSR were, in retrospect, unsustainable. The CCP, on the other hand, may have created just the right blend between totalitarianism, communism, and capitalism that is both sustainable and has global reach. We should not want to end up all-consumed by this form of government given how oppressive it is, and only time will tell just how all-consuming it…
Meh. No one thought the USSR was "unsustainable" in the 80's when they were an evil empire. And within the decade they were gone. Nazi Germany didn't look "unsustainable" either, until they lost. All great powers look unbeatable during their ascendance and weak in retrospect. Could things get worse? Sure. But all I'm saying is that things have already been much, much, much worse. And we came out OK.
Actually, both the guy who coined that phrase and others did:
https://www.nationalreview.com/2011/07/predicting-soviet-col...
https://en.wikipedia.org/wiki/Predictions_of_the_collapse_of...