how do you know the stablecoins are actually collateralized?
https://crypto-anonymous-2021.medium.com/the-bit-short-insid...
https://crypto-anonymous-2021.medium.com/the-bit-short-insid...
DAI specifically is collateralized with ETH using smart contracts - it's over 100% collateralization is incontrovertible.
So effectively, you've linked DAI to the value of a coin that is set by tether. That being the case, the actual value of the collateral is in question.
That's why I replied that way.