Don't put words in my mouth. I never called for any kind of ban. I don't think we should even ban racist jokes, but doesn't mean they are justified or funny.
What I do suggest though, is that we make progress. Films with racist ideology can be found in the past, but as society makes progress realising the hurt that stereotyping causes, we move forward by making art that is socially conscious and condemning that which isn't.
That doesn't mean however that subjects such as mental health and disability, race, class, etc... can't be dealt with in the arts, but it means that is should be done so in an emotionally intelligent way.
So for example, there is a 1946 film called Bedlam which shows exactly the way to make a horror/drama about the mentally ill. In this film it is first tries to imply that the mentally ill are dangerous and scary, but as the film continues it becomes clear that they are just vulnerable and are responding the savage nature of their treatment. The real monster of the film is the wealthy aristocrat that funds the Bedlam asylum, and the maniacal master of the facility who abuses the occupiers. Towards the end, the master ends up at the mercy of the occupants who put him on trial in a self-created court, but unlike the system that condemned them, they arrive at a humane decision. The film's only problem is that at the end it unfortunately makes bold statements about the improvement of conditions for the mentally ill following the story's end, but in reality that didn't transpire for a very long time.
The point is, in a film where the aim is to produce a socially conscious deconstruction of a subject, yes you can produce something about a tough subject that has a range of emotions, including fear, but still has moral content.
In a scare-maze that lasts a significantly less time and who's aim is to just make you jump and not think, there is no way they can cover the complexities of the subject and will have to revert to offensive stereotypes of vulnerable people.
I've not seen a lot of the films who have brought up Tarin, but if their content is exploitative without any real objective social deconstruction of the situation, then there is a fair case for saying it has failed to be socially conscious art and future film-makers should avoid recreating it's failures.
So Tarin, since you are quite keen on posing loaded questions, I'll return the favour. So you would have no problem with a Auschwitz themed maze?