There's an awful lot of momentum with the USD being the world currency. Even if it eventually declines I think it might take decades, if the British pound is anything to go by.
the UK hadn't fucked off every single one of its allies in the space of 12 months
Trump will default on the national debt before the end of his term.
Well if we create skynet but Grok (groknet?) we won't have to worry about it.