Slides give speakers more control. But I like using a combination approach, so some of my slides link to a zoomable/scrollable canvass.

I disagree that giving people information visually before you speak about it is bad. It may be a creative and engaging way to present. I like to pose visual mysteries sometimes and use my oratory to reveal the secret.

But I agree that the speaker is putting on a show and must be allowed to control it.