One way to get many back to work, and no longer qualifying for PIP:
Just on a small local scale - I'm close to the top of the list for an urgent heart operation to keep me working. (my PIP will of course stop while I'm in hospital - though my disability costs don't.)
The operation should happen in four months if I have managed not to have a stroke or heart attack before that date, having survived waiting for 8months with a few IHA's causing more issues, and expensive hospital stays. (but society saved a small amount of PIP while spending a large amount of NHS money instead)
I joined the urgent list autumn last year, because of the number of times my heart literally stops each day, and meet with 19 others on that list, at a specific cardiac monitoring clinic for echocardiograms. (There are multiple different clinics full of folks waiting for operations)
All but one of us at mine work, I'm S/E, 2 are on light duties, but the majority 16 are currently on long term sickness benefit and having to claim PIP to survive their conditions financially while they wait for an operation to re-enable them to not need benefits.
Our cardiologist fumes about having declared each of us urgent, then having to make us wait in pain and fear and repeatedly pulling us into hospital trying to keep us going and mend incurred damage, so we can eventually have our 'urgent' relatively easy operations.
This is just 16 people who are costing huge amounts of misspent money to be kept from working, and another 4 who together will cost everyone so much more if we deteriorate waiting for 'urgent ' treatment. Our treatment waiting, also costs a fortune.
If you multiply all the people all over the UK this is being done to, and fix it, not only will a fortune be saved, and many PIP claims reduced, and people back to work, but you'll benefit society as a whole, make loads of people very happy and face very little opposition. It's a win win for all.
TBF, post op I will still be PIP reliant to work, but most of the rest are only disabled by the fixable heart condition.
It seems too much like hard work and easier to leave it as a shit show and blame whoever is least likely to attract sympathy, though.