If you have some unusual symptoms or a little pain somewhere and no access to doctors you will most likely ignore it.

If you can get any diagnosis it can help you e.g. decide to travel to get treatment.

And the locally available alternative for ai diagnosis is a doctor you can get to in few months, who works 80 hours a week and has 10 minutes per patient.

For ai to be valuable you really don't need to be better than average physician in top American clinic.