Currently, USDT daily trading volume is over the Bitcoin trading volume and fourth highest market cap according to Coinmarketcap. My opinion is We can't trust the centralized stable coin to keep the money. Also, news around the USDT is not good, and it may be shut down by the authorities.
What is your opinion about the USDT coin?
I use the DAI to keep the stable value & will shift to the SAI in the near future where the money I'm not investing.
According to Tether's website, the stable USDT coin is 100% backed by a reserve of US dollars and other assets, including "traditional currency and cash equivalents and, from time to time ... other assets and receivables."
If so, I don't think there should be any problems with the stability of the coin and we should have any concerns about it.