It's worth noting also that while this has been doing the rounds again recently, he said it well before the current plague of generative AI slop was upon us. The clip is from a 2016 TV documentary. The specific bit of animation he was reacting to was a demo of the computer animating a ragdoll-like model body to try to find ways to move it forwards. While a living creature will normally try to avoid injuring itself as it moves, the computer algorithm had no such inhibition and so the virtual ragdoll would flail around and drag its face across the ground. The team working with it thought it would be a good way to animate creatures like zombies for horror movies because it was so inhuman and bizarre. Miyazaki was reacting to the inhumanity of it, and the fact they thought it was clever to create something so grotesque with no greater point to it than "Isn't this gross and weird?" I'm sure it was a painful criticism to receive, especially if they were all excited to show animation legend Hayao Miyazaki what they were working on, but I think he gave them something really important to think about.