You haven't even shown that it's more likely than a moose related fatality or a deer attack
The moose incident is not avoidable without major inconvenience. That was the point.
My brother in law who is a trucker has 2 on his record (1 000 000km driven). It's about where you live and when you travel. Up north moose / deer incidents are in weekly news during the summer. Drive at night and you increase your chances of hitting a moose by more than 10 fold. That's very comparable to the test they did. Don't do it and you don't increase chances of an accident and do it and it's an infinite % increase in change of accident.
It's very likely the author accepted a larger risk of an accident in the process of going to see Valasek and Miller than he did during the test
That's pretty obvious but it's not the case for the other people on the highway.
The point is simple. Don't do testing in an uncontrolled environment. It's easily avoided with no impact on the test itself.
Unneeded risk is just that, unneeded. There are a millions things you do daily to avoid even smaller % of danger and yet you roll your eyes at a completely avoidable scenario.
If you can admit to facts and common sense there's not much more to say here.