What are the disadvantages of the USDT?

Could you please elaborate on the disadvantages of USDT? Are there any concerns regarding its stability or liquidity? How does it fare compared to other stablecoins? Are there any risks involved in holding USDT for long periods of time? Could its peg to the US dollar be potentially disrupted? Are there any regulatory issues surrounding USDT that investors should be aware of? Furthermore, how does its performance compare to traditional fiat currencies? I'm interested in understanding the potential downsides of investing in USDT. Thank you for your insights.