About the liver he isn't making assumptions. Have you healed yourself naturally from liver cancer?
I don't think there is an unhealthy liver out there without stones. And more often than not they are also congested with parasites, especially the way we poison our bodies with processed food.
I've been taking a liver/digestive tonic with the same herbs that Charlie uses for a few months now. Do they help? Yes. In a live blood cell test it broke up my red blood cells in less than 3 months. Does it make the liver flush obsolete? No. I just got over 100 stones out two weeks ago and felt both the size of my liver decrease and my digestion improve. Does it make a parasite cleanse obsolete? No. If you neglect it, like I did with Humaworm, the flukes will come back with a vengeance in 3 months and you'll be at stage 1 again.
I also want to note that Charlie is not some magical alien coming from a magical land with magical herbs that only he can provide. Many herbal remedies use a lot of the same herbs and have been around for centuries. Not a lot has changed, especially since the time of Dr Christopher. What I'm saying is that there are other herbalists out there that do exactly what our man Charlie does.