The US has been very centralized and sanctioned some countries which some countries do not like and it is leading to de-dollarization. Some decentralized money like bitcoin would have been better to be the world's dominant currency.
But most of this countries do not know the plan of China. I hope they will know that China is trying to have the world power and shift the power from the West to themselves. Countries like Russia and Iran also want that.
Every one loves to be hero not only China or Russia. if really you know your worth and will want to be addressed with reputation, you will want to be free especially, financially. So even if SAUDI ARABIA should take such decision, to me, it will be a welcome development and economic enlightenment to other countries that have not taken such decision. since every country has its own currency, why wouldn't each country try to strengthen their currency for transaction? Why would they depend solely on dollars for international transaction? America is not the only developed country but also China, England and even SAUDI ARABIA have gone far economically. So if this is what they are planning to do, fine.