I'm going to go further and be a cynic and point out for a moment the billions of dollars that's been spent on trying to fight anthropogenic "climate change" - but how many lives has global warming taken? Meanwhile we have these horrible diseases that are killing people or crippling them for life and they're virtually unfunded.....
Hope you don't mind me gate-crashing.
I appreciate your point about ME/CFS and climate change both being belief systems but they are on entirely different scales.
There will always be climate change believers, agnostics and naysayers. You can produce all the stats that you care to and all you are going to demonstrate are associations. You can produce plausible models but they may still not be persuasive enough to convert. You can make predictions about future events but even when they come to pass, they can be conveniently ignored. [I remember being told in a university lecture in the late 80s that the oceans were a sump and that they could act as a buffer to rising surface temperatures. Over the last few years, I've often thought 'looks like old Prof Grace was right, then']
We can take heart that it is pragmatic to test interventions on ME/CFS (unlike the effect of carbon release on climate change). The pay off can be seen in a matter of months as opposed to decades or centuries. There will always be diehards but how many converts will we get, especially from present day agnostics. Once effective treatment is demonstrated, ME/CFS as a psychological illness will no longer be a belief system people are attracted to. There will just be a lot of clever buggers who know how to help us.