USDT is one of the stable coins that has a stable price using the original USD underlying, but did you know that USD currency can be printed arbitrarily without an underlying different from IDR or rupiah printed based on gold underlying
in other words USDT can also print coins at will like USD can USDT be trusted? without the underlying USD, which becomes the underlying of USDT, it could experience a sudden drop in price, in other words if the USD is problematic, it will also affect the USDT price.
Don't worry, the SEC has studied how USDT's money printing system works and it's completely legal. As far as I know about USDT's money printing system, in order to be able to print more USDT, the printer must provide USD with the same value and then they are allowed to print more USDT. Therefore, USDT is trusted and very useful until now. Therefore, it is very difficult for USDT to collapse because their mechanism is legal.