Here is a story showing the recent announcement that pensioners would no longer be repeatedly reasssessed for PIP could be less to do with compassion and more to do with expediency. https://inews.co.uk/news/dwp-quietly-admits-never-had-capacity-pip-reviews-pensioners-disabilities-dwp-benefits/
The simple truth is Parliament never voted for claimants in deteriorating health to be repeatedly reassessed, which makes it all the more astonishing that people under pension age with chronic and deteriorating conditions are still going to be!