You can change to BUSD or DAI if you want but I don't think USDT is a scam stable coin, it's just this stable coin has many haters they spread FUD news. USDT is the most popular coin in the market and I think every exchanges has USDT. If you are not comfortable using USDT then you can change stable coins like BUSD or DAI these two are trusted.
There are many users who will not listen to the multiple warnings and keeps on supporting the project unless they get busted or the developers run away with the money. All you need to do is to check their collateral and each and everyone can make their own assessment and see whether these are FUD or there is a chance that the developers are lying about the collateral.