Both points here are appreciated. One that a README file as a "placeholder" for a directory gives the opportunity to describe why said empty directory exists. I would be slightly concerned though if my build process picked up this file during packaging. But that's probably a minor concern and your point stands.
Additionally, the AI comment is ironic as well. It's like we're finally writing good documentation for the sake of agents, in a way that we should have been writing all along for other sentient consumers. It's funny to see documentation now as basically the horse instead of the cart.