Everything you have listed here also applies to USDT, there is hardly any difference ... except that with USDT it's still not clear whether they actually have the reserves or whether at some point the bomb will burst and the pegging can no longer be maintained ... with billions in damage to the overall market.
It is true that USDT is still unclear whether they actually have the reserves, but on the other hand, does the dollar have real coverage from gold, for example? Or even do the numbers in banks and on government computers of dollar balances match the paper dollars printed on the ground? Certainly not, I think most of these numbers are fictitious.
I personally don't like the dollar or USDT either, but in general I prefer owning any digital currency over fiat currencies if I have to, but if I had a choice I would only choose Bitcoin or another cryptocurrency with a good value.