USDS which is a stablecoin is quite different from others. From doing some research on it I discovered that USDS holders can earn rewards through Sky Token Rewards, where supplying USDS to the Sky Token Rewards module grants SKY governance tokens over time.
This is not new about stable coins. There are some stablecoins that you can stake or hold and earn reward. But you should be careful of all these coins. Especially during bear market which might make them lose the peg or fall than expected. I may be wrong but be careful of the coins.
That is right. In general one needs to be careful with stablecoins which are proven to be unreliable and lacking of enough liquidity to carter massive burning of the token in exchange of actual Fiat in bank accounts or cash.
If an stablecoin or a platform which holds your stablecoins start to offer unrealistic yields for doing nothing with your money, then it is a red flag for one to withdraw those stablecoins off there into a personal non-custodial wallet.
There have already been many examples of webpages which failed to provide their yields and ended up taking reckless trading strategies to keep their yield in the mid term, the end result is always people losing access to their hard-earned money and the company files for bankruptcy, washing it's hands in front of the defrauded investors.
Not all Ponzis or scams are so obvious and many are disguised with a lot of technical speech and buzzwords to distract our common sense and wake up our greed.