If anything, that would be the sign of the article not being written by an AI. There is nothing in the context of the article related to chocolate factories. A

If anything, that would be the sign of the article not being written by an AI. There is nothing in the context of the article related to chocolate factories. AIs usually don't just put random words in an otherwise mostly fine article. AI tends to have the opposite problem. The form is good, the words go well together, but it is nonsense when you look at the big picture.