That's not the point, I just said DAI because it's the most popular decentralized stablecoin. At the beggining it was 100% backed by ETH, then the project pivoted and now it's a complete mess (still much better than an IOU tho), but the original version is still running as SAI. There are stablecoins 100% backed by hard currency like bitcoin, with trustless mechanisms for redemption, we should focus on them, and ignore the scammy IOUs aka shitcoins.