USDT tether is the safest coin today. unaffected by market conditions and stable prices. nowadays many trades use USDT as a comparison, and for safe asset storage it is better to USDT because it does not go up and down in price
actually, the stability of USDT assets is also not completely stable. you can see how USDT is also moving as its adoption increases. it happens when the market goes down.
after several cases related to USDT which you may have also heard on this forum. in fact, USDT is still popular for trading.
but for me who trades on the binance exchange, I use BUSD more than USDT.