Re: Rewriting all the rules isn't helping
"tl;dr Never underestimate the complexity of people's circumstances."
This is the key.
I'm retired from the advice sector now but the generalist level bible we had to use runs to 1740 pages and is updated annually. http://www.shop.cpag.org.uk/welfare-benefits-and-tax-credits-handbook-201617
Specialist level benefits advice is very complicated. I specialised in debt and housing so required a good working knowledge of the benefits sytem.
A mate of mine was a senior IT manager at the DWP in Longbenton prior to his retirement. He told me that no one knows all of the details of the various systems that have accumulated over the years some of which stretch back to the birth of IT in the early sixties and are still in use. The DWP was one of the very first users of large scale IT.
We knew that UC in the hands of the Tories was only ever about cutting welfare spending as much as politically possible, with the ultimate end game being the complete dismantling of the welfare state. UC provides the cover to do so.