But it wouldn't mean anything if the "arbeidsdeskundige" decides you aren't fully disabled anyway. As they don't even really know about your medical situation or treatments.Did you see this info? You can ask for a reassessment if you were denied for not doing GET of CBT.
https://www.uwv.nl/nl/arts/herbeoordeling-me-cvs
I definitely think I could have gotten the benefits if I was more sick. But if you aren't bedbound it really seems impossible to qualify for them (unless you decide to lie..), as they have written out my disabilities and needs very well (in the parts that I managed to read, at least) but still found possible tasks.
(thank you for the link though! The one about this that I found previously was only about WIA.)