It's not true, the profits are not too good as they say, I was staking usdt on an exchange but the profit was so poor. At first I tried the flexible options for 7 days and it didn't even return up to $0.5 within that 7 days, so I decided to try a fix option for 30 days and yet the reward was still very poor. Instead of staking stable coins again, I'd rather save dollar in my bank, no risk.