What they say is also true, because if the profit exceeds our investment funds, the price of ETH gas, I don't think, is a problem because compared to the disadvantages of buying stable coins like TUSDT, it's better for us to invest in ETH, which many people have saved too.
Because the price of ETH every year there will be a change in its price as well.
TUSDT is not the usual stable token as you will never find it on the coinecko website nor on the coinmarketcap website nowadays.
TUSDT is a new token that wants to be developed like any other stable token so if you want to ignore it for now, it will only be better for you as well as others.