Composability works both ways.

You get insanely unique yield products onchain that you can't find anywhere. You also get a massive surface area of risk that is near impossible to untangle once wound up.
DeFi will be fine. It will persist through all of this as it always has, it will likely take on a new form.
New risk curators. New levels of due diligence. Far more conservative actors. More community pushback about centralized attack vectors.
Tough weekend for DeFi, but we will survive. Onwards.