That's a very interesting observation that deserves much more thought that I can give in a quick reply.
But I think one major issue is that we're living through an obvious inflection point in history. When the US was competing against the USSR, we achieved numerous objectively incredible things. For but one example, we went from having never put a single man in orbit in 1962, to putting a man on the Moon, in 7 years! In modern times, with modern tech and knowledge, we struggle to replicate what was done 60 years ago.
And so I am exceptionally critical of our systems in modern times, but also look at them with glowing fondness at what they have achieved in the past. But socially we rarely distinguish between the two - Democracy is Democracy. And so this can appear to be cognitive dissonance when one loathes 'current democracy' yet holds dear 'classical democracy.' And I think many people also feel similarly, even if they may not actually even realize it.
But back to the inflection point, for the past ~80 years, and especially the past 30, the US has reigned relatively supreme owing to a large technological edge driving a large economic edge. But now China is equalizing technologically which is also driving their economy upward. It's already the largest in the world PPP adjusted, and will soon enough also be the largest in nominal terms as well. A country of 340 million simply will never be able to compete against a country of 1.4 billion. So they are set to become the world hegemon.
What will that mean? Well historically they've always been relatively insular, even when going through periods of great power, and I don't really expect that to change. In the early 15th century they were, by far, the greatest maritime power yet one does not find Chinese colonies in the Americas, India, Africa, or pretty much anywhere. But on the other hand, I think this change does scare many people, because what if China becomes the new US and just starts trying to put its tendrils into everything and turn everywhere into little clones of the Chinese political system?
And fear is a such a strong driver of irrationality, the same reason people continually vote for people they don't like. I think this fear tends to cause a sort of rally around the flag effect, where people can see that this flag is one they scarcely recognize, let alone truly love, yet it looks far less scary than the one they don't know at all. Drive that fear of the unknown into people, which our political types thrive at, and the people will come racing back, not entirely dissimilar to a woman in an abusive relationship.
I still feel this is not even scratching the surface, but it's at least a first effort! It's such an interesting question that one could easily write several books on the topic. And in the future, people looking back, probably will do exactly that!