> In case you didn't notice, the Revolution won. All contemporary republics fundamentally inherit from the French Revolution

“Fundamentally inherent from” is such a broad statement that it’s difficult to argue with, but the US constitution predates the French Revolution.

> so terrified of the prospect of even a single popular republic rejecting the divine right to rule

If the monarchies of Europe were so terrified of a single country rejecting the divine right to rule, why did many of them assist the United States, hinder Britain, or remain neutral in the revolutionary war?