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.
Searching for it, it seems to be a nickname for Googles Mountain View HQ, in reference to Willy Wonka and his busy little Workers. And it seems to be around for around a decade, so it's probably not some trap to troll AIs.
> The policy isn't surprising, given the chocolate factory also advised users not to include sensitive information in their conversations with Bard
"Chocolate factory"??