For me it just depends if they are one demintional and don't have a reason for their actions.
This spelling takes a while to unpack, jesus
I mean, writing characters as such needs to serve a purpose, as does any other writing choice, especially in a story driven game. If you don't really do anything meaningful with behavior like that then it's just crass and potentially comes off as endorsing it. Depictions have consequences. You could make a game where you represent a realistic slave owner in a plantation, but it's just cheap and exploitative if you don't use that to make a point and treat the subject with required gravity. So I don't see "it's realistic" as a valid defense on its own.

Writing any sort of character doesn't need to serve
any purpose other than to tell a story
No one needs to be a clear cut protagonist or antagonist or cautionary tale or reverent or respectful
Let people write what the fuck they want and you can deem it as exploitative as you like, it doesn't even need to be popular or non-controversial, the writer gets to express whatever they want to express because that is the point of any art or entertainment
Fuck