The "ME is not CFS" thing clouds the narrative, in my opinion.
CFS is a terrible name and one that doesn't accurately portray our symptoms. But it's unbelievably confusing to an outsider to say "I do not have CFS I have ME" when they are known as the same thing. In my country, virtually everyone is diagnosed as having "CFS".
It's a terrible name, but I feel like more advocacy effort should be spent elsewhere. I personally couldn't care if it was called Stay In Bed All Day Because Holy Shit I Feel Ill Illness, if advocacy gained enough ground to find a cure.