Sure, I’m not saying trolls don’t try to cover it up. I don’t see any particular issue calling them out for it. That doesn’t mean there aren’t also bad-faith nutcases who can and will cause problems. The internet is a big place and there’s no test of basic sanity to log on, and few jobs or schools would want the reputational risk of defending even someone who was using a word in a factual discussion.

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.