At the risk of sounding callous, I wouldn't be surprised if a high number of cases involve mental health issues.* Not that there is anything wrong with that. On the other hand, I wonder if disability hasn't become the new welfare, or the alternative to unemployment compensation as benefits cease?
The total number of people in the United States now receiving federal disability benefits hit a record 10,978,040 in May, up from 10,962,532 million in April, according to newly released data from the Social Security Administration. - CNS
This is a very bad indicator for the country.
It is also unsustainable.
*Perhaps the consequences of living without faith in a culture of death.