[bobsoap]

It's a LLM, not sentient. It doesn't know what "cannot" and "will not" means or implies. You're trying to interpret its output as you would a thinking person's.

I'd put it this way: when GPT refuses to answer, it just observes a topical no-go zone and uses the phrase it deems most likely to strongly convey refusal, as that's the phrase that was used most often/most successfully in its training data.