The US dollar may be in trouble (when it wasn't), but I have no doubt that they (the US) and their allies still have a few tricks up their sleeves.
The "tricks" are just a money printer. And selling more bonds onto the market which affect the price of older bonds which are sold by making them go up or down!
These two simple items have allowed the US dollar exchange rate to be generally stable, even while the M2 money supply continues to skyrocket.What you say is correct, but it should not be ignored that the US is still the strongest military power in the world, which (unfortunately) still has a large military presence everywhere and many countries simply do not want (or cannot) get out of their grip. This is also one of the reasons why the USD is still held as the world's reserve currency.
I meant "gigantic" in the sense that Russia is the country with one of the largest oil reserves in the world. Believe it or not, oil is still a desirable commodity. Russia's been able to finance its war by selling oil to its allies. Geographically, it's one of the largest countries within BRICS. Same as China.
It's true, they have oil and gas, the only question is how long the world will be dependent on oil as its main energy source. China imports Russian oil and gas, but at the same time huge amounts of money go into renewable energy sources, while at the moment India buys the most oil, which shows that they don't care that they are financing Russian aggression.
However, it should be said that the EU also has its black sheep who continue to buy oil and gas from Russia (Hungary and Slovakia officially), and I would not rule out the possibility that oil finds its way to some other countries via the huge fleet of Russian tankers that continue to pass through despite the sanctions.
With rising opposition against the West, the large number of countries joining BRICS might eventually displace the USD's place as the world's reserve currency. Not sure if USD-backed stablecoins would be any help. Especially with "de-dollarization" going full-speed ahead. We'll see what happens in the long run.
They will certainly try, but the question is how successful they will be. The world has already become greatly polarized, and that will never be good for the world economy. In case the West says stop to China, to whom will they sell their cars, smartphones and all the other things they produce? The richest markets are still in the West and no one can deny that.