Pedestrian deaths, including children, have risen in lockstep with light truck adoption in the United States, while they have fallen in countries without this phenomenon.

It isn't about weight, it's way stupider than that: https://www.youtube.com/watch?v=YpuX-5E7xoU

Tall grilles are a purely aesthetic choice. We could create safety standards for pedestrian impacts and end this inane trend. And still drive trucks!