Reasonable point, we have folks who read violent Biblical passages and went off.
I wonder if the concern is the great old institutional fear of liability. They show the video and a watcher from their institutions seems to use it for planning.
I know places that won't teach first aid as they fear if they do and there is a rampage and the first aid is misused (tourniquet around neck -
), they will get sued. Letting the victim bleed out has less liability.