The session is built on one clear idea: AI works best when it helps people, not when it replaces them. That is a story, not a how-to. It needs enough time to set up the history from 1968, connect it to where AI is now, and share a few moments where humans came out ahead by working with new technology instead of against it. Twenty minutes covers that story well, with no padding.
The topic is also made for a mixed room of product managers, designers, and developers. A short, focused talk keeps it at the level they all share. A longer workshop would pull it toward one role and lose the rest.
The Q&A is what ties it together. Each group will want to apply the idea to their own work. That is where a PM, a designer, and a developer can each take it into their own setting. The 20 minute talk plus question time leaves room for that.