I think stable coins like USDT are very safe. Usually he will add supply when the price of bitcoin rises or the price of USDT exceeds the fiat price and if bitcoin goes down he will reduce the supply. This is how USDT keeps prices stable. But it is not the cost of USDT can be manipulated, the Mecca of cryptocurrency is still bitcoin. Then the rise or fall of the USDT supply is in the condition of Bitcoin at any time.
It's true that USDT is very safe and I don't think there's any doubt about that,
USDT is also still the choice of many people including myself and even so far I have no time with it,
clearly USDT is a trusted stable coin
but in fact, you won't usually have access to the redemption section, as the fee of it is
extremely high. until you can redeem your funds, you can't verify if that Tether amount is legit. also, half of the whole Tether capitalisation is backed by commercial papers we don't have access to know about.