The core financial infrastructure, like DAI and Curve, is weirdly robust: it's already been through quite a few crashes that would probably wipe out traditional financial plumbing. So, at the very least, keeping stablecoins on Curve and AAVE is a way to hedge against other kinds of systemic risks to the financial sector. This feels a little crazy in the US (where we don't anticipate systemic collapse) but less so in many other countries.