One theory might be that it could be good for Russia for a certain period of time, up until Russia's currency was so successful that it did indeed threaten the US hegemony. But having the world order tilted back that way could cause tremendous economic problems for the United States as well as putting pressure on the US-centric military apparatus to maintain its hegemony. It could even lead to a war between major powers.

Its almost like the bully being afraid to take his foot off of his victim's neck because he might get up and then he has to actually fight him. I think the reason other countries may not be anxious to push things is because a global war is probably going to be much worse for them than just having a weaker currency and less resources etc.

The other aspect is that it seems like history very commonly ends up in a situation like this with hegemonic powers (otherwise known as Empires). So for now people some people may hate the United States, but sooner or later people will be resenting the Chinese or the artificial superintelligence that starts controlling everything. Personally the current paradigm benefits me so I hope it will continue for awhile, and that we can arrive at the next one without too many people dying. It would be nice to imagine an equitable world, but that doesn't seem feasible given the preponderance of propaganda despite democratized instantaneous mass communications.