That the policy and implementation could be better, goes without saying. I prefer the disclosure as seen on Steam. It is details in text.
But even there, I have doubts that you would see a disclosure about how the engine used would have some ai code in it. As I said, Chrome contains ai code. Every web game that only runs bug free on Chrome, or is even bundled with a Chromium, would fall under the code ai section, if you would apply the ai question transitive.
This is not the intent of the ai disclosure. Leafo made a statement about this somewhere here. The opinion was, you should only tag a dependency that has ai in it, if you chose that dependency because it has ai in it. It follows, if you merely chose that dependency, because that library is a common library, or happens to be your game engine, or bundled browser, that the disclosure questions do not apply. It's about the things put into the game, not the things necessary to run the game.