Lesson for project owners from CZ
1. Never use a token you created as collateral
It is similar to collateral for your margin tradings. It should be in stable coins (a strong one that should be old enough. I don't trust new stable coins). If you use Bitcoin especially altcoins as collateral, you will be more easily liquidated.
2. Don't borrow if you run a crypto business.
You can make loan but it is similar to margin trading. Risk management should be done very well. Obviously the best is avoiding loan and too high leverage for your crypto business.