Assuming I'm reading the paper correctly this wasn't AI Generated so much as it was AI Assisted.
They used AI to generate character dialog and voices (easily the worst parts of the video) while the humans guided the plot and picked the lines of dialog that would be used.
My guess is that they could have produced the same thing in roughly the same time without AI. Possibly with better results. Writing individual lines really is not the bottleneck.
They used AI to generate character dialog and voices (easily the worst parts of the video) while the humans guided the plot and picked the lines of dialog that would be used.