How do you say "We have no idea how our product works", without saying those exact words.

OpenAI: "Training chat models is not a clean industrial process. different training runs even using the same datasets can produce models that are noticeably different in personality, writing style, refusal behavior, evaluation performance, and even political bias,"

They can say 'refusal behavior' and get away with it.

https://businessinsider.mx/chatgpt-accused-of-getting-lazier-2023-12/