Doesn’t everyone carry a boatload of cash on a plane?
That’s how they get away with doing this. If it affected everyone they couldn’t get away with it. We all fly for different reasons. Sometimes it’s someone going to a coin show. Sometimes it’s someone bringing their life savings home. But the bottom line is that it’s none of the government’s business unless there is evidence of a crime. And having a lot of money is not evidence of a crime.