"Makes stuff up." And it's us, the users, who have to realize this. I mean, I wouldn't blame OpenAI for this, at least not at this point, and the company will have to live with it, look how it can turn it into something useful instead, since there's no one to complain to.

A glorified Markov chain generator.

Now, humans could very well also be statistical inference machines. But they have way more tricks up their semantic-level understanding sleeves than ChatGPT circa 2023.