[SkyBelow]

To answer this, I would think we should consider other cases where someone could practice medicine without legally doing so. For example, could they tutor a student and help them? Go through unknown cases and make judgement, explaining their reasoning? As long as they don't oversell their experience in a way that might be considered fraud, I don't think this would be practicing medicine.

It does open something of a loophole. Oh, I wasn't diagnosing a friend, I was helping him label a case just like his as an educational experience. My completely IANAL guess would be that judges would look on it based on how the person is doing it, primarily if they are receiving any compensation or running it like a business.

But wait... the example the OP was talking about is doing it like a business and likely doesn't have any disclaimers properly sent to the AI, so maybe that doesn't help us decide.