Well wouldn't that just be your personal view. Also why would your personal view should be the deciding factor to limit what an artist feel they need to do in order to do their Job. The company already exposes their people to graphic images because they produce them within their game. I am not sure exactly what you are expecting. Have you seen any MK game including the latest one. The fatalities and brutalities are pretty damn graphic already. Just because personally you would not view, watch or create this content just mean this type of game, working at that company isn't for you.
So what responsibility does the company need to provide. Would it be any different then a Police, Firefighter, Military or any other company that has any type of high stress. So far no one has found out or even know what NR offer for their employees but instead just throwing out emotional statements. So a guy got PSTD from working there but then again an employee can get PSTD from any high stress job. It seems you are judging the company without even knowing what they offer as solutions.
Still, at the end of the day, if a person cannot cut it at a job they still will need to find another one. Nothing changes on that front. If a person tried to be a policeman, firefighter or joined the military and could not cut it, developed PSTD, what do you think would happen. Yes they can get medical help but as far as the job is concerned they have to find something else.
I've made no emotional statements. I've simply said the company is responsible for a work environment that unnecessarily harms its employees. And while some fields have inevitable traumatic experiences like police, firefight, military, healthcare workers, social workers, etc. those are inherent to the field and usually actively mitigated when possible. There is no inherent need for employees to watch snuff films in view of their co-workers in order to perform their jobs. And if the current company policy is allowing such exposure, they have at minimal a moral, and probably a legal, responsibility to alter said policy to protect their employees' well-being.
The work environment is making games that show death in a bunch of different ways. There is no 2 ways about it. It's not a job cut out for everyone and so everyone should not sign up for it. You are basically trying to define what a game studio should be just because they create entertainment forgetting that the creation of that content doesn't always align with standard principals. The nature of the job put people in a position where its not going to be advantageous for everyone and morality doesn't play a role because morality is defined differently for each individual.
Choices are made by any individual and if a job sucks for them then they need to quit and move on. You say that Police, healthcare etc have traumatic experiences inherent to their field and I see no reason why a company that produces death sequences within their product not being right there with those companies. You are basically saying just because it's a game company, there isn't traumatic experience you would encounter and I am saying you are wrong when the company deals with death on the nature of their product. That would be like saying an Anime studio would not have traumatic experiences if the movies they make deal in gruesome deaths. People consider Anime as cartoons and think of it as a kids medium but anyone who watches Anime knows that isn't the case. I am saying game studios just like any job should not be thought of any different as any job where you deal in content on the level as NR.
At best the employee could have made a statement about seeing such content walking by and NR could ask those employees to move their desk so that the content could not be viewed by others walking by but that's pretty much it. If this was a problem and brought up to management then sometimes it does involve employees bringing such issues up to HR and management.
As to whether people should be watching such content, I leave that up to the person doing so and do not judge how they get inspiration for creating their work. I have no clue what it takes for people to create the type of content like MK, gruesome Anime movies, or horror movies books you name it. Even trying to just make your standard shooter, I have heard some questionable things people do to make that content. Who am I or you to judge them just because we may not be entertained but such stuff.