> Holism (from Greek ὅλος holos "all, whole, entire") is the idea that various systems (e.g. physical, biological, social) should be viewed as wholes, not merely as a collection of parts.
Of course it would be best if there was a universal language which everyone was proficient in, every patient had unlimited healthcare resources, had a strong understanding of medicine and every doctor was an excellent communicator, was under no personal/professional pressure to deliver specific outcomes, always took all the time a patient needed to understand every aspect of their case and care in the present and into the future and personally consulted with every possible specialist that may be involved with the potential outcomes.
Putting aside the strawman, there are significant compromises with the highly personalised approach you suggest (some of which I tried to outline, but have not been responded to), just as there are with national level approaches (which are self evident). I feel that there are applications for both.
The fact is there are tons of people for whom the side effects are a non-issue, and many for whom they would be far worse than the disease, and the statistics give no indication as to who is in which category.
The role of public health is to provide information so that doctors and patients can make better informed decisions. But the idea that decisions should be made by some third party that "knows better" is predicated entirely on the false belief that such an entity exists.