I agree that our organs being sluggish, congested, etc. is a part of the probem, but correcting those alone will not rid someone with moderate to severe candida from the overgrowth. You must strengthen those organs as well as eliminate the candida. Improving organ function alone will not remove well established candida (in most people, there are always exceptions).
It is similar to getting cancer from smoking. Stopping smoking will not reverse the cancer, it's there, you have to deal with it. Same for candida, strenghten organs, eliminate candida, establish healthy intesinal flora.