If the issue is distracted drivers, I don’t see how heavier trucks is still not the issue. With lighter vehicles you would likely have a higher chance of surviving.
Minor quibble: I don't know if 'heavier' is as important as 'taller,' though. I have seen someone hit by an actual sedan, be thrown onto the hood, fall on the ground after the car stops, and survive. Being hit is not the same as being run over, which is much harder to have happen with a car-shaped car.
Yes, but on the whole we got much heavier trucks from 1980 to 2009 while pedestrian deaths went down.
There’s also the issue that heavier vehicles are inevitable due to EVs. Our bz4x won’t get tagged as a “big evil truck,” but it’s about the same weight as a base model Ford F150. And heavier than a Toyota Tacoma double cab.
They can both be factors, just one is much more influential than the other. Alcohol is involved in about half of all pedestrian deaths. So it seems that's the issue, but people would rather talk about vehicle size.