I dont think anyone here is saying that they would keep calling someone a name if they were asked to stop. We all would.
The question is where does it stop? It gets tricky and hard to keep up with. You used "folk" a few times. How do you know that doesnt offend someone? If they don't tell you, how would you know?
There are words that change meaning over time. Idiot, imbecile, moron were all clinical terms that became offensive, and were later changed to mildly retarded and severely retarded. These are now considered offensive and people now call it the "r word". Then mentally challenged came out and people are against that. I think the new term is mentally disabled, but that's probably offensive to some also. The word retarded was used by schools when i was there until the late 90s, so these things sometimes change quickly.
It's hard to keep up with these if you are not expressly told on what to say or keep up with current social justice themes. (Some of these are now changing almost over night. I saw where some feminists were offended by adding trans to lgb and now some are offended by "people of color").
Most people in here are not out to hurt anyone, but have no clue on what is currently looked down on. Oriental is pretty obvious to most, but other terms not so much.