Happily!
The WHO classifies ME/CFS as a neurologic disease. Yes, there's lots of stuff wrong with us in many body systems, but the brain rules them all, like the One Ring.
The NIH Research Roadmap is doing a webinar on each problem area, starting with neurology. I've linked the webinar below. If/when I have the energy I will watch and try to explain. One of the presenters is Jarred Younger, from University of Alabama, Birmingham. He's a scientist, not a physician, and he is studying our brains for inflammation. He uses MRI and PET scans to document the inflammation and I heard him say in a talk (can't remember which one) that if a person doesn't have brain inflammation he/she probably doesn't have ME/CFS. The brain is that important in our illness. He also looks at long Covid and Gulf War Syndrome.
https://event.roseliassociates.com/me-cfs-research-roadmap/recordings/
@Hope_eternal The CFS specialist isn't wrong in saying ME/CFS is a brain disease. The question is whether stimulants are an appropriate treatment. If you have the energy you might the doctor to explain in more detail what he means by a brain disease and have him explain what he thinks is going wrong exactly. That will give you more information about whether the provigil would be beneficial or not. Of course you don't have to do this if you're feeling too overwhelmed. You are doing a lot already.