Tether has been stable since its price was disclosed in Coinmarketcap in February 2015. The use of Tether has become popular with traders seeking a safe haven during bear markets. Tether makes it easy for traders to go back and forth to convert to fiat.
Yes, but now there are many choices of coins that can secure temporary assets for back-and-forth conversion in the market, such as BUSD and others whose security is almost the same as using USDT or tether.