Nonsense. Mostly because nobody actually "kills someone and then drives in circles".
Human life being valuable does not change that certain activities carry a certain amount of risk, and so of course the more you do that activity the more likelihood the risk manifests. It is valuable information to know if one area has a hugely disproportionate number of traffic deaths compared to overall traffic metrics.
e.g. let's say I'm picking between two cities for my next job. Every day I will drive 25 miles to work, regardless of which city I choose. I look at the stats and see that in X city, there is 1 traffic death per 10,000,000 miles driven. In Y city, there is 1 traffic death per 100,000 miles. Therefore if I live in Y city I am 100x more likely to be involved in a fatal traffic accident. That is very relevant info to me and doesn't cheapen the value of human life at all.
Of course "driving in circles" is an exaggeration, but I think they're trying to say that if a place is structured to encourage lots of mileage (maybe there are things with relatively little utility, like surface parking, causing destinations to be very spread out; maybe there's no public transit option so more people are driving), then there will be more fatalities at a given per-mile rate. If you optimize _purely_ for the per-mile rate you might be missing out on ways to reduce fatalities by reducing mileage.
Human life being valuable does not change that certain activities carry a certain amount of risk, and so of course the more you do that activity the more likelihood the risk manifests. It is valuable information to know if one area has a hugely disproportionate number of traffic deaths compared to overall traffic metrics.
e.g. let's say I'm picking between two cities for my next job. Every day I will drive 25 miles to work, regardless of which city I choose. I look at the stats and see that in X city, there is 1 traffic death per 10,000,000 miles driven. In Y city, there is 1 traffic death per 100,000 miles. Therefore if I live in Y city I am 100x more likely to be involved in a fatal traffic accident. That is very relevant info to me and doesn't cheapen the value of human life at all.