I tend to agree with what you are saying. my opinion is that many things people assume are "caused" by candida actually have other underlying causes. Many will tell you that candida itself is just one symptom of many that can result from a clogged up liver or colon. same with cfs. people tend to blame candida for all of it, but I believe people are putting the blame in the wrong place.
If you search through the "ask andreas" archives, you will find old messages regarding the coated tongue, and cfs. If I recall, Andreas says its due to blocked up liver/gallbladder,poor digestion, and backflushing of waste that results from the poor digestion, backed up lymph system and clogged colon (overall toxicity). All of these things are related and can be dealth with if you are open minded and patient.