I think you're reading that as a judgement on the code itself, like there's morally good and bad code. However, the very same code can be used for both bad and good purposes, like the banking you're mentioned. It's more in the use and the context than in the algorithms themselves.
I'm reading this as while code seems purely technical, don't think you'll avoid ethical dilemmas. You won't jest be solving algorithmic puzzles in the void. Your code can do tremendous amounts of good ( AI that diagnoses cancer better than the best human doctors, most productivity growth...), but it can do harm to. Chose wisely.
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