As I understand the NICE guidelines, flawed though they are, they only recommend GET and CBT for mild to moderate sufferers and make it clear that this is an option to be offered, not something to be enforced. It does not recommend these treatments for severe ME. Obviously we must not be told the details of this particular case, but in general, I can't see how anyone can be forced to undergo CBT or GET. Doing so would be completely unethical.
What you say should be true and at one point the UK's Chief Medical Officer (Liam Donaldson at the time I think), did state that people should not be forced to undergo treatment. The reality is quite different for a number of different groups:
1) Children - as a parent being threatened with the removal of your child unless you comply with treatment advised by a medical "expert".
2) Children/young adults with parents who believe the doctor's advice over what their child tells them. This is a real problem where there are too many docs who toe the NICE guidelines.
3) Adults who are told that if they don't try the treatment then they are obviously do not want to get well and so may lose benefits. The person may not know enough, or be well enough, to contest this. They may not realize to what extent their health may be damaged ('cause no one wants us to see those figures either).
4) Adults who are newly diagnosed and still in employment. There are short courses for occupational therapists on CFS/chronic fatigue (one day I believe), covering how to diagnose and what to recommend (CBT & GET). They may be given no choice other than to follow the company OT's advice or be penalized.
5) Adults who are covered by a Permanent Health Insurance policy. Some of these policies, depending on the wording, reserve the right to terminate payments unless you follow the treatment path they recommend. Again, if you want to keep the roof over your head and you may not be aware of the possible harms, you will comply.
Essentially, the NICE guidelines can be just guidelines or inviolable rules depending on what suits the establishment. Even very well meaning medical staff won't necessarily read the fine print, they'll take the headline info and recommend that. You have a diagnosis of X therefore the treatment is Y and that's that.
All roads, in the UK, end up back at the NICE guidelines. People are either mislead or forced to follow a treatment path which may well cause harm and that harm may be permanent. They need to change.