Vitalik: If the market is effective, the risk of failure of DAI minus the risk of failure of USDC causes half of the difference in yield

Twitter users replied in a vote of VAI's annual interest rate on DAI high loans: Please study the USDC loan interest rate, such as ETHLend, which is equivalent to DAI's interest rate, so I think this shows people's concerns about DAI failure. Less, the interest rate is high because the market is ineffective.
In response, V God replied that the USDC rate on Compound and ETHLend is about 6-7%. Therefore, if this is a valid market, it means that the risk of failure of DAI minus the risk of failure of USDC causes half (yield) difference, while the risk of failure of USDC or the risk of failure of Compound causes the other half to differ.