But RPGs are more than cultural objects. They are also tools for creating more cultural objects. As such, they should avoid morally-objectionable content.
What I was trying to get at is that a common response to concerns about the ways RPGs express racism and racialisation is to say
But its not racist to hate an essentially evil races such as [insert fictional race here].
This is an attempt to judge the value/morality of the fiction by
what is going on within the fiction. My view is that this is flawed, and often verges into apologism. The relevant question, in my view, is not
what is going on in the fiction nor
what is going on from the point of view of the cultrual object itself but rather
what actual, real-world phenomena and processes are at work in this object?
I think it goes the other way also. To pick an easy example, the novel The Quiet American depicts morally objectionable content (eg colonialism, terrorist attacks upon civilians, etc). But that doesn't make it morally objectionable. On balance, despite some problems Greene has in articulating the significance of race in the story and the situations with which it deals, I think the book is morally powerful.
I think we're agreed (unless I've misread your posts, in which case I apologise especially given the trickiness of this discussion) that one problem with "evil races" is that it presents the outlook and conceptual apparatus of racialising and racist thinking in a completely casual way, as if it were quite unproblematic.