The woman in the article was in an ongoing, multi-month chat discussing her medication with ChatGPT.

I don't use it for medical stuff very often, let alone on models within the last year or so. But I have certainly experienced the "drift" that can occur (even on subjects with sensitive guardrails like medical advice) where it gradually bends towards the user's perspective and away from the inflexible canned responses from the system prompt over time.

The language in many of the quotes from ChatGPT included in the article seem like they could be miscategorized as following directives to be supportive/friendly/helpful even though it implicitly was providing (reckless) medical advice at the same time.