How makers stay productive

Gary Simon from DesignCourse(Coursetro) who's Youtube channel has 704,000+ subscribers just made a video about UI Coach where he used it to generate a challenge and proceeded to design the challenge on the spot.
This is so crazy because Gary Simon is the guy I learned UI design from so this feels like a dream now.

https://www.youtube.com/watch?v=HVPfOq5X02g&t=133s