“With bronze age tools?” Well-there were probably not any workers comp adjustors/case managers at that time-but a head injury is still a head injury-I seriously doubt that workers back then bashed themselves in the head to cause the kind of injuries shown, so unless almost everyone fell on their head from every ladder or wall-someone else had to do it. I’ve had clients who tried to fake comp injuries-it is not easy to do without getting busted...
Most of my clients have always been injured construction workers-falls from ladders, injuries from tools like hammers, chisels, saws, etc likely haven’t changed much-just that some tools have power now-you would not take a reciprocating saw or a nailgun to your head-an accident is possible, but it would be rare today-and even less likely in an age without power tools...
They would not pass inspection now days and had no safety features. In the Books of the Law an axe head flying off was used as the example of accidental homicide for which a person would not be punished legally and later on you find other examples of axe heads flying off and going hither and yonder.
Things dropped and hard hats were not a thing. Ladders were made of scrap wood, ropes were used until they broke and the main way you transported loose rubble was in baskets that were subject to breaking and tipping.
It just was not a safe profession.
Did some of the people with head injuries die from murder? Probably. But to say they all did or even that the majority did is more then a bit over the top.