Given that, according to the article, he's just using it for storyboarding, in attempt to better communicate a vision to a range of human contributors, it's really unclear how this decision will "age badly." either this is a stronger way to create storyboards or it isn't.

Presumably he has the experience to evaluate if this is likely to actually help or not. Or at least if it is worth exploring.

It is rather unclear why you believe he is likely wrong, aside from conjuring up rather ageist speculations about his motives.