Comparing those numbers with Europe, whose safety net doesn't usually require people to pretend being disabled, would have been enlightening. A missed opportunity.
I would wager most of those people are disabled, but for psychological reasons. As you point out, the level of stress caused by financial insecurity during any period of disability is extremely high. A lot of white collar workers in the US end up in a particular catch-22: their jobs are making them sick, but because they are sick, they can't leave their jobs. They become psychologically disabled because of the pressu…
The system scammed them. "Do what your teachers say and collect pieces of paper from academics and 100% of you will get a guaranteed lifelong meal ticket with great bennies"
So now they have to suicide, taking their families with them, because no job means no food no shelter no medical care ... or they can scam the system right back, just like the system scammed them. "For my whole life, did everything I was told no matter how hard or stupid it sounded, to get that lifelong real job meal ticket, they took it away from everyone in my community to save money, guess I'll just collect a lifelong disability meal ticket instead, its a lot of work and BS but the process selected for people good at putting up with BS so I'll surely get mine"
In modern America disability is our only long term unemployment system. You get pain pills for phantom pain then sell them for extra cash. The system screws you, you screw it right back. Isn't their fault they were born into a system that tossed them away like human trash. The system is faulty, not them.