If we see that most of the stable coins are backed by USD, then what is the point? That means these cryptocurrencies ie stable coins are making usd more powerful. I think everyone who knows about these kinds of things well, they all will agree with that. If there the stable coins were backed by some other fiat currency then there would be a possibility that those stable coins will do de-dollarized. So I think such stable coins will increase the dollar's strength and actually prevent De-dollarization.
We have to agree with your opinion. Most stablecoins are backed by dollars, which essentially means that the dollar is a non-cash currency, only in the world of cryptocurrency. Therefore, such stablecoins fuel and strengthen the dollar, as they provide increased liquidity.
But for the stability of the cryptocurrency market, it would be better if stablecoins were adequately backed by other world currencies, such as the euro, pound, yuan, and yen.