Ehh, it's just more realism at play. In the real world there are "antiquated" terms that many cosmic(social) justice adherents believe to be racist and bad. Yet, some of those terms are what people identify themselves as too, so we run into the problem of, "Hey, that's part of my identity and I don't want you to take it from me." vs. "I need to take it from you, because it's a symbol of your oppression!"
The thread's already addressed the actual problem, which is the othering. The real solution isn't to stop using the terms, but to gut them of their malice, which is a mental obstacle for some people.
I can keep calling Sahagin beastmen, and they can keep calling me Shorewalker.
