Slaughterhouse workers have very high rates of PTSD and depression. Healthcare workers who deal with death are also psychologically impacted.
Can't speak to the others.
https://pmc.ncbi.nlm.nih.gov/articles/PMC10009492/ - slaughterhouse workers
https://pmc.ncbi.nlm.nih.gov/articles/PMC12174799/ - healthcare workers
I'd say getting PTSD and depression working in a slaughterhouse, or dealing with death as a healthcare worker only proves the point? It's a correct sane reaction.