Pinching was a frustrating character. Despite seeing the condition as mainly physical, I don't recall him criticising either individuals like Simon Wessely or Peter White or criticising their views and rhetoric. I got the impression he wanted patients to be fairly silent. That might be one approach if he was willing to give criticisms himself, but he was not. He has been retired a long time now and still hasn't spoken up.
In its International Classification of Disease (ICD-10, 1996)10, the World Health Organisation (WHO) categorises ‘CFS’ under the heading of ‘Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99)’. This is a rookie mistake. CFS is classified in the ICD-10 as the index of Code G93.3 http://apps.who.int/classifications/icd10/browse/2010/en#/G93.3
Its all muddled. He's mixing up WHO's ICD-10 with the US specific ICD-10-CM in which CFS was put into the symptoms chapter. And the ICD-11 comment is wrong.
This is mentioned here: Podcast: "Chronic Fatigue Syndrome: Illness in context" https://www.s4me.info/threads/podcast-chronic-fatigue-syndrome-illness-in-context.16620/