People who seem likely to be diagnosed seem less likely to happily sleep for 12 hours a day for a few weeks after a viral infection, more likely to blame themselves for their state and more stressed by awareness that something is wrong.
Naturally, if a rich layabout has the problem anyway, then we can look to their childhood and find at least one trauma.
Heightened awareness of a problem can be related to the cause - these are not distinct.
The comorbidities of ME/CFS make it look very similar to known psychosomatic conditions. Researchers who explore psychological-heritable causes have been forced to stop due to death threats.
Your suggestion that somatically-involved conditions aren't 'real' is offensive and what gives rise to the stigma that means we can't talk about this in the first place.
I think the offense is going there without any double blinded science and then relying on non reproducible fields of research to annoy the patient.