The way I stake my USDT might not be as easy as doing it on a centralized exchange but the ROI are much greater.
There are a few platforms with a bit difference on them. The One I use and currently providing good ROI is interport that provide a huge interest over 80% per year for USDT on some network, but the catch they have is there's a 90 days vesting period before the interest you withdraw is useable. That is you can withdraw your deposit, increase or decrease anytime but the interest needs to wait 90 days (1/3 year) to get to your wallet. It's still a good interest rate effectively above 50%.