take the word eugenics, for example. we've decided that's not okay. by asking modern questions around it, you think you can make it okay to support eugenics. but unfortunately words can have two meanings, and the word eugenics has picked up the meaning that non-blonde blue eyed white people are to be euthanized. thus, you can't use the word eugenics. you want it to mean one thing, but the rest of us have agreed it means this other thing, and you're left confused because you're saying X and everyone else is hearing Y because Y is what that word means to everyone else.
My sad experience is that you just can’t do what you want, if what you want is most people to treat your language with the high precision you intended or to pause their emotional filters and explore some philosophical “what ifs”. You might be able to find some pure and deep thinkers in real life or private settings to explore questions highlighted in the fourth post in your link: https://news.ycombinator.com/item?id=38699727
But in public settings (including online) you mostly can’t.
You also can’t even use some words online, despite them having a very precise and innocuous meaning.
As an example:
Try to guess the reaction to something like: “when I realized Colin didn’t leave a tip, I didn’t confront him as I knew that he wasn’t going to change since that was just an inherent part of his niggardly nature.”
A human compiler, equipped with the correct dictionary definition of “niggardly” will process your sentence one way. A random person on the street, online, or in a pub is highly likely to take offense. If you insist that people are obliged to treat your sentence as if you’d said “stingy” (the definition of the race-connotation-free word “niggardly”), you’re going to be confused when many refuse.
Similarly, if you ask some of the questions from the link above among strangers in a public forum: are they asking in order to deeply explore all valid philosophies concerning them? Or are they placing poop into the pretty nice punch bowl we have here?
Many will assume and treat you as if it’s the latter, because their experience is many people do do that online, and treat you as if you’re doing that as well.
You know your intentions. Other people have to guess at them. If you communicate in a way that matches you to a pattern they have a negative reaction to, you’re going to get that reaction.
(I was avoiding going to that thread again because looking at it stresses me out, I took a week long break from hackernews after that)