Like the author says, AI does help you get there via experimentation.
I wanted to mod a Casio watch with a custom crystal and screen that had not been done before. I needed a 3D model of the crystal for prototyping.
Claude was able to get the specs mostly correct, implement it in my Claude created custom 3D modeling program, and then I was able to understand the modification process with Gemini.
All of which would have taken me months to do before AI (or LLMs for the HN intelligentsia) existed. I was able to get the project done in a few days.
Creativity is also never purely original ideas, creativity is the continuation and connection of many different ideas already existing in the world. We don't think about how we might innovate on the printing press because these aren't things we think about or interact with much in our modern society.
AI + creativity is the new moat. Creative prompting is important, too. Everything is creativity, LLMs are tools just like Flash was.