Double reply, eh? - I've been doing my job. Sorry I can't drop everything to respond to you on HN.

As I said it's not exactly under-reported, that was your cue to search and find something like: https://fullfact.org/news/how-many-fit-work-assessments-are-...

And (to address your other comment) I assume you aren't being literal with your specific example (because the guy you were responding to didn't literally mean people were assessed on their ability to walk to a shop specifically), but yeah there have been reports of people who can't walk very far getting told they're fit for work (For instance this guy: https://www.cornwalllive.com/news/cornwall-news/photographer... from earlier this week)

Where's your evidence?