I see. I think that's the way to do it because from reading the comments it seems like patients were given very different treatments under the same name. Some people said CBT helped them to accept the illness while another said “CBT encouraged me to stop thinking of myself as having ME and a serious illness. They said everyone felt tired sometimes and did not accept ME." That's as contrary as can be.
I remember from the 2015 ME Association survey that there was someone who explained why he/she found pacing unhelpful and the description seemed more like GET. Others who liked GET said it was helpful for finding their baseline so they stopped crashing etc. So that seems more like pacing. Perhaps if we were to ditch the labels and describe the treatments themselves, we would see even larger differences between what patients find helpful or harmful.
What I meant with, the survey does not mention GET, is that I couldn't find something to compare with the results of previous surveys where approximately 50% found GET unhelpful or harmful. The survey asks about advice on activity management, but GET normally involves intense guidance of a healthcare professional. On the other hand the comparison between the initial advice to rest/adjust activity versus maintain/increasing activity is probably more interesting because the results are more difficult to explain away as selection bias.