I fit the SEID criteria, but probably not the ICC. So, if ICC had been adopted as defining criteria, I would now be without anything describing MY illness. So it goes both ways.
I have always believed that CFS was a heterogeneous disorders, with many different causes (subsets), and I still believe that about SEID. Whether ME exists as a discrete, infectious disease in its own right, I just can't say anything about, I'll leave that to the experts.
I would be fine with the ICC being defined as ME - a subset of SEID. However, I would not be fine with the ICC being the ONLY criteria, as that would leave me without an illness. There has to be room for us both.