It's noticable that he used the Oxford criteria for selection of patients. With the expansion of IAPT and the fact that it seems beloved by all political parties in the UK, I expect he thinks he will have a long and lucrative career, working on CBT (and GET) for 'medically unexplained symptoms'.
I anticipate that as more and more evidence mounts for the problems of post exertional malaise and a broken energy system in ME patients, the BPS crowd may begin to seperate 'ME with PEM' from CFS (Oxford criteria). I think we have already seen some papers where they seem to be laying the groundwork for this. Then they won't have to deal with those annoying ME patients who keep challenging and critiquing their work - but they will be left with a big pool of patients with 'medically unexplained fatigue' who they can continue to 'work with' in relative 'peace'.