The problem is that presentations are not just short documents. I think GP would be fine with a short document.

A presentation is a sequence of slides, along with which comes many issues that prevent critical thought, such as the lack of random access, the lowered bar of evidence, and so on. You can convince anyone of anything as long as you craft your slide deck deviously to hide the lack of evidence and internal inconsistencies.

That is much harder with a document, even if it is short.