We all know that the 'factual context' is often used as cover by trolls. Whatever the excuse, people are not idiots.
Also, I'm not sure 'factual context' is a good idea - why say things that are upsetting to people? If my friend's mother just died, I don't talk about death 'in a factual, rather than personal, context'. In general, I don't describe, e.g., torture 'in a factual context'; it's not nice.
I don’t think there’s any virtue in using it when it upsets people. I also don’t think there’s virtue in refusing to use a word, even in discussions about that word. There’s a line of reasonability: using it to express hate can and should be frowned on. But substituting a euphemism in all contexts is excessive.
The person that comment referenced doesn't seem to be a troll and obviously wasn't writing in a hateful context. Ironically, the fact that he used a euphemism pretty much proves that.
I'd rather have a wild jungle internet full of anonymous people saying nigger in every second sentence than one of voluntary gestapo thought police combing through post histories to dox and hound common people because they don't fulfill the "linguistic standards" imposed by a small group of ideological/political activists.