that's really interesting but there is more than one way a liver can be damaged.
I'm training as a medical herbalist (we work a lot on nutrition) and I've lived and worked on farms my whole life. I've talked to several vets about this kind of thing.
liver stress, inflammation and fat collection are all related. which comes first is the question.
In the case of a chicken being fed mainly corn and soy, its likely that omega 3 and green plant deficiency is the problem.
to reiterate:
omega 3 is required to produce fat transport molecules so an animal can use and dispose of fat effectively.
green plants contain fibre and chlorophyll which improve an animals gut microbial balance which, in turn, improves nutrient absorption, immune function (reduces excess inflammation) and hormone production (which affects fat storage).
amazing how all this is just scraping the surface!
but when you look into most problems in most animals in a modern context often correcting the gut microbiome allows everything else to correct itself.
which means the whole thing can be as simple as: eat plants esp greens. don't eat too much omega 6. treat grains and beans before you eat them.