> I'm talking about basic use of a keyboard and mouse. You just expected other people will know how, yet have no basic knowledge of other professions

That was their point: keyboard, mouse, and basic computer interaction is general knowledge that anyone in modern life should have, like first aid or what traffic signals mean (for both vehicles and pedestrians).

Yes, and the doctor in question is skilled enough to use them. He uses them via hunt and peck, not touch typing, but that's good enough for his purpose.