When the XRP Ledger proposes to eliminate flash loan attacks from its architecture, the entire DeFi ecosystem should reflect not only on security but also on the fork in the design philosophy of L1.

The XRPL amendment draft states that, due to its transaction construction method, flash loan attacks are "structurally impossible" on the network. This is not a patch or upgrade, but an immunity inherent to the native architecture—similar to gene editing rather than taking medicine.
Ethereum DeFi has lost billions of dollars to flash loan attacks, from bZx to Cream and various cross-chain bridges, each time a cycle of "allow-fix-allow." The XRPL's choice is: to not allow this lending model to exist from the start.
Behind this are two approaches: Ethereum pursues maximum composability, allowing anyone to lend any asset at any time, even if it means increasing attack surfaces; XRPL leans more toward determinism, sacrificing some flexibility for a secure baseline.
For investors, this reminds us: not all L1s are suitable for all DeFi applications. When you see a chain's TVL soaring, ask yourself first: does its architecture inherently defend against the most classic attack vectors?
The risk is that XRPL's conservatism may also limit innovation. Flash loans themselves have legitimate uses (arbitrage, liquidation), and completely eliminating them means giving up some efficiency. There is no free lunch.
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