This is an experiment they ran and were prepared to lose money on. It seems perfectly reasonable for an AI company to test their products in adversarial conditions to have a better understanding of its flaws and limitations.
That's just pure nonsense. My partner is very competent cook and she invents new recipes and experiments all the time. I don't see why she can't use LLM output as an inspiration to combine with her own expertise, sense of taste, and preferences to come up with an excellent dish.