Have there been any cases of USDT wallet blocking by the issuer(Tether) after an exchange on your exchange?
As you can see above eXch's answer was "no".
I can say from my own experience, half a year ago, when I needed to exchange bitcoins for the dollar equivalent, I first turned my attention to Ledger Live, and after I was horrified to see a 5% commission, I realized that eXch’s commission costs of 0.5% seem simply incredible (btw, I already have Trezor). But before the exchange, I was also bothered by the same question... so I decided to turn to
statistics, according to which over the past few years, a total of 1300 USDT addresses and 300 USDC addresses have been blocked.
For this reason, I chose DAI.
Wow!!!! From the link I see, $1 Billion frozen on USDT.. and also there one chart that breaks down how much value per banned (frozen) address and another chart that shows almost an exponential increase in the quantity of address bannings since 2020.