But wouldn't someone on the MW also qualified for WTC, HB, CB etc etc too?
Some people, a minority did well out of the system and would have been well enough to work, the vast majority would not have.
The system especially for those who are unable to work through not fault of their own is supposed to provide more than a subsistence level of lifestyle, you know being a civiised society, should people who are unable to work because of no fault of their own be forced to live in penury? Or are we a society which supports those that are in need?
The changes that have taken place have caused misery to many more thousands of people who haven't done anything wrong far more than were enjoying the "high life", and it has stigmatised needing help, there have been increases in attacks on the disabled over the last few years.
The DWP have calculated that the cost of benefit fraud + WTC fraud is about £1.5 bn, less than 1% of the entire welfare budget. Its fine to try to catch the fraudulent, but there are more of HMRC/DWP staff doing this than are trying to catch tax avoiders or collect the nearly £12.4 billion that went uncollected in VAT in 2014.