Where do you get the impression that people are "unconcerned" about the former?
What is the ratio of passenger vehicles to semis on the road?
Focusing on this, for me at least, isn't a form of "whataboutism." I'm just curious about what semis look through the same lens.
While the data I've seen suggests that training and licensing help reduce the number of accidents involving semi truck, it doesn't eliminate accidents. As the number of semi trucks on the roads increases so do the number of accidents involving semi trucks.
I'm also curious about injuries and fatalities. It's relatively easy to find stats for all motor vehicle based injuries and deaths. Tt's much harder to find how many of those involved semi trucks and passenger vehicles.
My prediction: though collisions between semi trucks and light vehicles happens less than light vs. light, the percentage of serious injury or death is much higher between semi and light. If the number of semis are increasing over time, so are the number of injuries and deaths.