The economies of every country in the world is tied directly or indirectly to the American economy.

And that’s undeniably a bad thing. And since US will never allow anything else as long as they’re perceived as strong, maybe their collapse will be the only path forward.
The same was said about EU and Russia before the war started, “everyone” was saying that EU depends on Russian oil so much, the second Russia stops selling, EU economy will collapse. And when it finally happened, it turned out to be a nothingburger.
It’s possible that this incredible American dependence is also a bunch of empty bolstering.