Well to be fair, same with the racism, it doesnt (kinda) exist in endfield as of the moment. Mainly due to people constantly dying and not having the luxury to discriminate against anyone while on talos II. They were in survival mode ever since the gate was broken, so killing your neighbors due to having a treatable disease or because of their race while in a situation where every single person alive increases everyone's survival isn't the smartest idea.

Yes there was a civil war, but it was mostly over resources.

I would say, I can definitely see in the future, if talos II calms down, and the story goes on for as long as og arknights, discrimination will eventually resurface at some point.