Yea, USDT was created as a stable coin, and that remains one of it features. Due to the highly volitile nature of bitcoin, Tether was created to offer a stable assets that traders, investors and exchange can rely on at any given time.
In addition, because Tethers are backed by a store of real-world currency, users can enjoy the benefits of digital, blockchain-based transactions without being subject to the volatility of most cryptocurrencies.