Not true. Crumple zones are built into trucks same as cars these days. Wearing a saftey belt and properly securing a load is what will save your ass. Sometimes there’s just nothing you can do like getting hit by a train. Or getting hit sitting at a dead stop by another 80k middle doing 70. These are catastrophic things but your typical accident or roll over you will walk away from.
I know some work is put into it, but nowhere near that of a passenger car.