I almost edited my comment along those lines. Except I was going to say the people who reject interesting exceptions don't practice science, they practice scientism. And I think that's bad in anyone, especially an MD (who AFAIK are trained as scientists who don't know everything, which is why they call it "practicing" medicine).

Yes, and it is a feature. A) it protects them legally and mentally (you just follow the current standard)

B) you do not want your doctor to have a scientific mindset, which would mean experimenting with your condition with the aim to learn more about nature

At most you want the detective mindset (aka House MD), if you have something uncommon, but you do not want it all the time.

What do you call the person who graduated last in medical school? Doctor.