But we're not talking about an 80's christian mom since you proceeded to make the observation that "People are outraged by whatever they are told to be outraged over and ignore everything that they aren't".

Which is to say, being exposed to extreme violent/abusive content could only cause PTSD iff one is subject to a specific social construct that define these acts in a certain way. Let's just assume you're right, what kind of employees would that imply are immune to getting PTSD from such content given your previous observation?