One thing that is difficult here is that there is very little content to advocate with. Almost none, in fact. There hasn't been a single good news in decades. The overall picture is very bleak. The research landscape is even bleaker. Noting has improved at all.
I would be more optimistic.
I see the reality that a group of studies, including DecodeME, the Precision Life studies, some studies done by people like Simon and Audrey and one or two other more peripheral things have given us quite a good overall picture of the disease. And that situation is very new, even if it is firming up what was becoming clear over a decade.
The causes of ME/CFS are
1. Genetic factors that include at least 8 known DNA domains that provide something like 10% of overall causation. (There are one or two studies giving a bigger percentage but this is looking a fairly good estimate.) The likely paths from these risk genes involve neural connections, pain pathways and innate immune cell activation, much as expected, but still to be pinned down in detail.
2. Infections act as time-point triggers and EBV is a major contributor. Covid-19 as well, at least if we consider ME/CFS-like Long Covid as under the ME/CFS umbrella. Risk genes overlap partly, which is as expected. It is not clear that infections actually contribute to lifetime causation because we all get these infections, but they probably do to some degree.
3. That almost certainly leaves a major part of causation, maybe as much as 80% as stochastic - suggesting, again not unexpectedly, that the disease pathways involve tripping a bistable regulatory mechanism that is sensitive to chance events (as for autoimmunity and of course cancer).
The exact signals that perpetuate disease are not known but we have some clear candidates and a lot of non-runners. DecodeME has not pointed to anything precisely but it has given clues and rare gene analysis/WGS has a very good chance of firming things up with a hit on one or two specific mediators. Further analysis of data already available and cross-comparison with other cohorts is also quite likely to throw up specific pointers. We are not done with the DecodeME data by any means.
The female predominance clue promises to be something that might lead to identifying specific pathways. People are already looking at this. We are also getting useful signs that male and female ME/CFS are very much the same disease, which has major implications because if there were two major causally different subtypes we would expect them to have different sex ratios and age of incidence patterns. That does not seem to be the case.
So ME/CFS probably is a virally triggerable neuroimmune disorder, but not because it has anything to do with the putative neuroimmune 'ME' of the 1950s. The broad structure of disease dynamics is shaping up in all sorts of ways. This is how you get to the answer. I know because I have been here before. It always seems slow but then suddenly you discover someone has put together ten bits of the jigsaw in another corner you weren't watching.
If only the MRC people would do a Rip van Winkle and wake up at last. But this can be done without them.
Now is the time to put out some information indicating that we are beginning to understand what is going on.