The IQ test qualification for lifelong government support, along with being suspect to start with, seems like an easy thing to game. Either you are stupid or you should be smart enough to fake stupid in taking such a test.
It’s not just IQ. It can be behavior problems, autism, learning disabilities, etc. that can get a family a check every month, if they can get a doctor and a judge to agree. When I signed up for Social Security a few years ago, I was the only geezer there—everyone else was there for disability.