While Tether has indeed been subject to scrutiny and controversy, it's essential to approach the topic with a balanced perspective. While some voices in the community have raised valid concerns about Tether's transparency and backing, others argue that it serves a vital role in providing liquidity and stability to the crypto market.
Tether use their money to buy US. bonds and Circle USDC do the same too. Stable coin companies are engaging deeper in USA. economy and Tether are becoming bigger with time.
They recently changed an audit company to a bigger one as their effort to improve their audit report to community and customers as well as to build up their reputation.
I did not believe in Tether too much but after the Terra UST stable coin depeg and some similar depegs on several stable coins, Tether USDT is a best stable coin if you need one stable coin to use. At least they handled about $10B withdrawals from customers smoothly, no issue. I am not sure how will they handle bigger withdrawal like $20B or $50B.
True, I didn't get all the hate around it, especially after UST collapse. They always provide what they promise.