It is what's known as "subverting the form" or more simply "poetry" and it's a luxury afforded to those dealing with human-to-human language as opposed to human-to-computer language.

You're right, the analogy is not as near as the author could have come to an illuminating isomorphism between the two concepts. In many ways you're right, it could be taken in a way that makes the meaning less clear. However prompt illumination is not the only or even the most important purpose of analogy in language.

Interestingly, your own analogy (metaphor?) of a speed bump also transcends its immediate meaning as you intended it. By making you drive (read) more slowly, it also makes you drive (think) more carefully.