Good point, but I see lots of articles are using this "kidney disappointment" so maybe but.. holy toledo look at Impacts of Renal Transplantation and its Mental (2023) by Renan Kamath : “organ disillusionment,” “kidney relocate dismissal,” and “excusal of the moved organ.”
"waste can build to exorbitant level inside the blood, which harms both kidney and closures in kicking the bucket... "
"Regularly, it's more irritating than it is not kidding..."
(Pal and Gautam 2018)
Its like when you write a school essay and look up every second word in a thesaurus thinking it makes the essay better