Whereas the current unipolar system, despite its flaws, is correlated with the largest expansion of peace and prosperity in history.
I think a lot of what we are seeing in geopolitics today comes down to world leaders realizing that there could be another pole in this system if things keep going the direction they are going. And that second pole would be an authoritarian nation which is one of the greatest human rights violators on earth, has a million people in detention for practicing moderate Islam, claims sovereignty over Tibet, Taiwan and Hong Kong despite vigorous protest from all the aforementioned, and who shelters a neighboring hermit state that's always threatening to nuke the other pole.
Predictably you have dictators like the ones in Cambodia, Russia and Thailand who are enthusiastic about the idea. Increasingly you have resistance to it in the West and in allied stable democracies like Japan and India.