From Raymond Chen's blog:
Good advice comes with a rationale so you can tell when it becomes bad advice. If you don't understanding why something should be done, then you've fallen into the trap of cargo cult programming, and you'll keep doing it even when it's no longer necessary or even becomes deleterious.
The person who wrote this is a very smart fellow which usually writes well, so this makes me wonder if it's an idiom I don't know instead of a simple (and ugly) mistake.