You have never been a nurse. It is true that we need doctors to do doctor stuff and nurses to do nursing stuff. But nurse stuff is a lot bigger than you think it is.
Most of the time when you go to an ER, an Intake Nurse decides who gets seen first and which doctor to send you too. They do the triage and in order to do that the nurse has to have a very good idea of what your diagnosis is.
Like I said before - anyone can diagnosis correctly 90% of the time. But 90% is not 100%.
The reason the doctor does the official diagnosis even though the Nurse already knows what is wrong with you is that 10% of the time when it takes an extremely trained doctor.
Most of the time, any nurse that's been on the job more than a year has already diagnosed you and put the relevant text notes on your chart. The doctor usually just comes along and makes it official. Usually is not all the time so the doctor is very important. Also, making it official protects the nurse and hospital against law suits as the Doctor gets to say they made the decision, not the nurse.
But you missed my main point. The AI was not diagnosing the patient at all. They did not examine the patient, the Nurse did. Remember when I said the Doctor is very important? The AI is NOT important because the AI does NOT do what the doctor did:
Verify that the Nurse's observations were accurate.
Double check that the Nurse did not miss something.
Ask additional questions that the Nurse did not know to ask because she did not get an MD and the condition is very rare.
Because the AI did not do any of these things, the AI is not actually diagnosing anything. They are just looking at the Nurse's diagnosis notes and converting "blood in urine, history of uncontrolled diabetes" into Kidney Failure. That is not diagnosing, the nurse did that when they asked the patient screaming about blood coming out of his penis if he is a diabetic. The nurse asks that question because she suspects he is likely in kidney failure and wants to make sure.