I've been staking stablecoins on Binance and even though the rewards aren't much, they're passive income for me. There is no problem with the reward. I'm sure it will get bigger later because I do auto staking, where when I get the reward from staking, it will stake together in the next staking (correct me if I'm wrong). On Binance, there are several stablecoins you can use to generate more stablecoins and so far, I haven't had any issues.