I am not sure many people will ever come to understand that we are all different and what works well for one, may not work well for another; in terms of recovery... in addition, some slower "cleansing" processes may not be appropriate to some one in dire straights and immediate need.
Then there are time factors and what an individual is willing to do for themselves.
Ongoing maintenance for everyone should only take a good healthy Diet and lifestyle... now if we could find some clean air, water and soil somewhere, perhaps all periodic cleansing would be unnecessary...