OK I'm gonna lay out my reasoning step by step here.
1) I agree that focusing on GET harming patients is the most advantageous thing to do, on the surface -- though I'd counter there are already many reports of patient harms they've managed to ignore by pointing out that patient organizations are the ones reporting them.
2) I also agree that it's unethical to actually force a patient to do GET; the only ethical thing is to use actometers and gather additional data after periods of heightened activity. Maybe call the patient in if their activity reaches a certain level (via step count), draw blood and/or do muscle biopsies, and continue to do draws regularly until the person says they are back to their baseline.
3) Do the same for sedentary controls. See that the blood values differ between these two groups. See that recovery time differs.
Then what, though?
The BPS practitioner tuts and reassures his audience that this sporadic,
unguided exercise routine is not what he and his colleagues do at all! Why,
NICE guidelines explicitly advise against it!
They'd pivot as they have before: ME is real. Look at those blood values! So different from sedentary controls. Fascinating, fascinating -- these poor maligned people
are really sick, you know.
And their illness is best addressed by
physician-guided exercise, only physicians can guide the patient to wellness, look what happens when they're left to manage on their own... it's unethical to leave them w/o skilled care.
More funding for GET, please.
Given the ethical considerations, I'm not sure of a way out of this one.