Can stablecoins be able to prevent de-dollarization?
Maybe so. But I think the basis of the depolarization is the international trade between countries and the PetroDollar. If let's say, Saudi Arabia which is the largest oil producer will start PetroYuaan, then it's the start. To my knowledge, it hasn't been happening but they were very friendly with China since the time Joe threatened to make them Pariah.
The BRICS members however are already agreeing about this de-dollarization except India which opposed it since Modi wants Ruppee to be the one than Yuan.