Have you met Galen, Durhamjen? I can't see her kowtowing to anyone.
Whatever the system of awards, an "appeal court" is needed for the cases that slip through the net. Miscarriages of justice have to be sorted out, whichever direction they are in. The benefits that go to fraudsters may be proportionately small, but discovering them means that the money wasted on them is available for more genuine claimants.
The evidence put forward can be detailed and esoteric, those sifting it need to be experienced in both the medical and the legal aspects. When they are still able and willing to do it, making them retire compulsorily at a set age seems draconian. The brain does not switch off suddenly when the body gets a little battered, and regular checks ensure that senility is not setting in.
More power to Galen that she prefers to use her abilities for the public good than to sit at home "enjoying herself" - and going stir crazy with enforced incarceration. I suspect she could keep on until she is 90, not 70. At least.