[Sai_]

How is it pedantic? The framing is fully wrong.

We can't eliminate murders but do we say the optimal amount of murders is non-zero? Instead, the right framing is "we live with some numbers of murders in aggregate because eliminating all murders is impossible". It's not like we need some number of murders for society to survive.

The use of the word optimal implies some murders (or fraud) is necessary for society (or financial transactions).