Odd, but for future discussions: it's nor a premise, nor a dichotomy, but a judgement. A premise would be something like: bad medical advice is bad. A dichotomy would be: Gemma can offer no medical advice or bad medical advice. It then remains to be seen if they are bad or false.

But Gemma is a "small" model, and may not be expected to answer all questions. Medical questions are particularly sensitive, so it's quite possible they decided to err on the side of caution and plausible deniability. That doesn't rule out the model has other virtues.