Although there are so many accusations and FUD about USDT to be a scam, failed project, and also a risky stable coin, in fact, so far, this becomes most used stable coins in the crypto market. We cannot deny how this coin always existed in the exchanges, always having bigger pairs so that we can meet easier pairing in trading. And so far, I have no problem with the issues. As long as we are also analyzing and watching the progress of the stable coin possibilities, I think it is still fair to use this as a favorite stable coin. But once more, always watch out.
Most used doesn't always mean it's trustworthy and has no way become a dead coin, anyone which still use USDT are have risk if the SEC want to audit and regulate this coin. The reason why all of centralized exchanges are add USDT because it's the most used stable coin and high volume, if in the future DAI or USDC overtake USDT, every centralized exchange's eyes will look into DAI and USDC, not USDT.
When there's a big problem on USDT, you're already late to convert your USDT to other coin. If you think USDT isn't trusted, what's the point for holding it and watching it everyday?
We have seen so many "most used" before that went down. BCH for example was a top 5, even a top three at some point coin, look where it is now. USDT could be most used as of right now, but that doesn't change the fact that it is both losing attention towards others now, and people are fearing stablecoins a lot more now.
Combine those two and you will see that USDT and all the other stablecoins will lose some attention in the near future and we shouldn't be really trusting them. I personally do not trust them and I am not planning on trusting them in the future neither. If something is not decentralized, it doesn't worth investing into if you ask me.