There is simply no way to express precise, detailed and well-articulated ideas or subjects through Powerpoint. The presentations then give the illusion of mastery, comprehension and control over a subject matter. Which means, again, that the most serious issues cannot be discussed through that medium. There is no room for complexity, complicated relations between economic, cultural and political elements. Powerpoint stifles discussion and reasoned argumentation through the bullet point format. It is surface over substance.
So, paradoxically, at the same time as workers are enjoined to use their creativity, it is forcibly channeled through the most impoverishing format where all that matters are strong points, key concepts, and action plans. All neatly lined up. Quite often, after the presentation itself, the presentation is the only document of reference that is preserved (”I missed the meeting, can you send me the Powerpoint?”).