Because it is decentralized and private. The bank cannot freeze your USDT (unless you store it on a third-party wallet like a crypto-exchange).
I mean you don't have to worry anything if you aren't blacklisted or don't get involved with money laundering, but saying it's private and decentralized is quite misleading.
Huh... So it is.
This whole time I thought it was decentralized... Guess I was wrong. Thanks for clearing that up!
I would like to change my statement to: USDT and other centralized tokens/coins should be avoided like the plague.
edit: but also, you are confusing privacy with anonymity.
We learn something new as much as we live