I wouldn’t go that far. There are a number of reasons why this could have happened, some of which include unbalanced medications for mental health issues.

I have a family member who is perfectly capable of driving a vehicle and getting from place to place without issue, but twice in the past decade she’s gone off her meds and there were issues. Once she drove across 3 states before she got pulled over and the officer recognized a mental health issue, the second time she was just 2 towns over knocking on a random door asking if she could buy their house.

I don’t know these two women or their situation, but I don’t think we can just assume they both have advanced dementia and belong in a nursing home, rather than just an isolated issue that can be fixed.