The news article said they were charged with lying on a government application. That's the crime. Doesn't say anything about being disabled and flying was the crime. If you claim disability and get paid without lying then you didn't do anything wrong. If you then fill out an application for a medical and say nothing ever happened to you and that you have never been disabled, then there's the lie. The article makes it sound like we have all these disabled pilots flying and that's why they were charged, because that sells papers. The crime is lying and falsifying a government document, maybe a technicality to some, but still a crime.
Speaking of which, I can't believe the America West pilots got 5 years and 2 1/2 years in prison, when a drunk driver can kill a family and get nothing.