One can look for a common cause to explain correlation.
The highest vaxxed age group is likely retirees, who may or may not have a lower traffic accident rate—for every awful senior citizen driver out there, there are likely two or three who have given up their licenses or no longer even own a car.
I imagine that the unvaxxed are a combination of people willing to take risks and people who are very conservative—I would describe myself as both, in different ways.
They also are not, I think, the sorts of people who stay locked up at home.
The data point is interesting, but more digging is needed to explain what is going on.
I had considered taking the MRNA as the riskier option.