There is an apparent irony in presenting ideas effectively to a group. Your goal is to help them to understand things better, but the best way to do that is often to use trickery.
Everyone enjoys a good presentation, especially if they come away afterward with a better or deeper understanding of something. But simply standing in front of a group of people and reciting that explanation is usually not the best way to do it.
Rather, the most effective methods involve grabbing your audience’s attention, and helping them to focus on what is new and exciting about the ideas you are presenting. And that involves showmanship.
Yet by its nature, showmanship is a kind of trick. To use an analogy, you are telling people to look at a yummy chocolate bonbon, and while they are doing that, you are using that moment of rapt attention to feed them something that is actually nourishing.
I don’t think there is anything wrong with that.