Isn't the whole idea of Bitcoin to have a decentralized network that is useful and fair? Isn't that Tether?
If you were to use Tether then it's better to use your fiat. Tether has created by having the USD in mind. They say it's backed by USD 100% but it is not. It's just a smart contract and Tether company can close it anytime if they want.
I agree, Tether had been fined because of their lies about USDT being fully backed by USD. Besides Tether is centralized unlike Bitcoin, meaning the developer can tweak anything according to what they wanted. besides, they(Tether) can blacklist any address anytime.