Those contradictory admonitions are the result of not understanding cellular and organ functioning, and in my mind the root is the missunderstanding of the role pain may play. Not only physical but mental orientation w re to researchers and their motivations.
Since rather than a health adept I am an interested explorer, my thoughts on these things can only reflect my limited experience. Tho I have been a researcher for enough years to have a semblance of informed information,my position is much simpler than those proposing involved chemical process'. The term health adept, having different connotations to different motivations, can be a delima to the ill. So many experts, so many texts and positions of approach. For many of us the earlier teachers like A. Ehret ect. fill a void of confusion created by the missunderstanding of complex systems.
Since dissadvantageous chemical compounds or toxic ones play a role in many illness', especially in a society emeshed in a manipulated environment, and when the original functioning of said systems may become congested thru wrong lifestyle and diet, the organ may become perverted beyond help. Still ,as I infered, when we slow down, simplfy our basic view, treatments often times result in information missed in more sophisticated understandings and regimins to regain health, thus your original ques and premise delima.
W re to the liver, tho complex enough to still be a research subject in these "modern" times, it seems to many of us that simple approaches still work efficently to help it regain order.
Tho blockages,congealings, dissruption and destruction of channels seem to be the real delima,and often cannot be relieved normally,ever. We find that which overrides problems, takes into consideration the bodies/liver's own ability to regenerate, and it is most effectivly discovered w the elimination of the liver's regular food processing by the minimalasation of intake and the intake of the simplest foods, the 'oses', the simplest carbs, complex constituants not withstanding.
Pandoras box is around here somewhere.