[SilasX]

Sorry, I wasn't clear: I meant that the reviewers aren't checking that the code is running correctly.

And yes, I'm sure scientists do a bang-up job testing their own code, just like they do a bang-up job validating their own experience, checking their own logic, and criticizing their own experiments.

But the whole point of science is not to trust yourself; to make reproducible what you did. To the extent that you seal off part of the process from this kind of review, you're not doing science, but something else.