Amongst other things it means that inexperienced F/Os in particular can concentrate on instrument flying,
These "inexperienced" first officers are, in theory and by legislation, second in command of a jet transport aircraft that is capable of having over 400 passengers aboard. They have a command type rating.
and are not burdened with concerns about transition to visual cues and completion of the landing,
Are you suggesting that inexperienced first officers do not have the necessary handling skills to not only fly manually on instruments during an instrument approach, but find themselves over-burdened when required to transition to visual cues on breaking visual and land the aircraft?
Are they not required to demonstrate their competency to a command standard during instrument rating tests? Or is that only on automatic pilot controlled approach and landing?