I will point out that it is fairly traditional for technical communication to contain formulas, equations, and/or pseudo-code.

I am aware of the tradition. Yes, Eliezer's piece does not include any semblance of technical rigour.

I believe the assumption behind this tradition is that such formal means of presentation are often clearer than expository text.

There is a reason the formal presentations include accompanying explanations. The mathematics for this kind of thing would be nigh incoherent and quite possibly longer than a verbal description. Expository text is utterly critical.

Incidentally, I have almost no doubt that "might be easier to understand" is not your real reason for demanding "you know, variables and things". Some of your real reasons may actually be better in this instance.