I went back and read it. The wife was on SSI, and her husband took early retirement and is on just social security. The amount they make is not enough for them to qualify for a subsidy to pay for insurance, and they obviously can't pay for the insurance. In most cases, they would have been covered under the expanded Medicaid but Tennessee did not expand Medicaid. If they continued to live together and be married, they would have gone over SSI income caps and she would have lost her coverage. She has really severe epilepsy and has not been able to work enough in her life to get SSDI, and the only way to afford her medications was to divorce. With early social security that you retire on, you don't get Medicare until you're 65, I think, that's how it worked for my mother. The guy also has a big hernia that needs surgery so he can't take on major work at this time, though he does deliver pizza.
I can see a lot of people falling into the cracks this way when previously they were covered.