All in all, this is not the fault of flash loans, especially-the exploited loopholes exist in other protocols, and flash loans only provide funds for the attack. This form of DeFi loans may have many interesting use cases in the future, especially considering that the risk of both the borrower and the lender is very low.
If the lender lends too many assets at the wrong time or fails to receive repayment in time, the lender may unexpectedly lack liquidity and fail to fulfill its obligations.