But, if I understand the article correctly (I only read some chapters, as the essay was dragging along in its conclusions, so I might have missed some aspects),

But, if I understand the article correctly (I only read some chapters, as the essay was dragging along in its conclusions, so I might have missed some aspects), the alternatives are not PowerPoint vs Latex Presentations (or whatever slides are used). The alternatives are technical reports and written and high density handouts (e.g., for tables or detailed pictures). The key problem of low density is true for most presentations I considered good as well, independent of powerpoint usage. Most of the times, they are essays. Now that I think of it, this essay would probably work well as a talk (no matter the software).