The pilot was 82 years old..his wife..age 70 was the other passenger..doesn't say if she was rated as a pilot..but given that age..it's a good guess that medical problems probably caused the crash..
I'm not a pilot..don't know what the FAA medical requirements are for pilots over a certain age..annual physicals?
I’m in my 70’s and a former pilot. I would not consider piloting a plane without a qualified pilot next to me at this age.