My rule of thumb -the longer the list of things something is supposedly good for the less effective the treatment is likely to any for any of them. Why not just say it's the secret to eternal life (or earnings for the therapist) and be done?
It's interesting that the website has differentiated between 'treating' and 'supporting'. This is in line with the draft NICE ME/CFS guidelines I guess. Whether most people will appreciate the difference, I'm not sure. Perhaps, the easiest route to getting this Netdoctor entry to be less harmful to people with ME/CFS is to get them to add other long term conditions to the list of diseases supposedly supported (but not treated) by CBT e.g. cancer, MS, Parkinsons.