I can propose a possible solution to this polarising problem.
Separate Myalgic Encephalomyelitis from Systemic Exertional Intolerance Disease. Those who qualify for an ME diagnosis as per ME-ICC retain the ME name with its WHO ICD code under neurological diseases. Those who qualify with the IOM criteria retain the SEID name with the new ICD code that will be assigned to them.
It is impossible, as we are experience, to satisfy both groups. A patient with ME, whose symptoms are mainly myalgia and CNS inflammation will never be happy with the IOM criteria or the name SEID. Those that don't fit the ICC and perfectly fit the IOM criteria, do not suffer from myalgia or cns inflammation, will no be happy with ME.
Thinking out loud and ignoring the choice of name for the moment…
Is the polarization because there are actually two separate diseases here, one described by SEID and one described by ICC? Or is the polarization because some feel that the criteria defined by IOM do not do a good enough job of representing the disease we call "ME" while others feel that the criteria are good enough to move forward?
makes me think of what Hyde said - "Definitions are not diseases, they are often simply the best descriptions that physicians and researchers can offer." So are there really two different diseases? And was IOM trying to develop a criteria for just one of them? Or do we have two different definitions trying to describe the same disease?
Once PEM, unrefreshing sleep and cognitive dysfunction are defined as core symptoms, it doesn't seem like we are dealing with two diseases. If that's true, then it seems that the question boils down to whether the new criteria accurately reflect the nature and breadth of the disease they are intended to describe - including neurological and immunological, while
also avoiding the CFS definition problems that led to this disease being conflated with psychiatric disease, medically unexplained fatigue, etc for 30 years.