IMO it's important to keep the person who's going to read your words in mind if you want them to understand you rather than using your favorite high-dollar words to try to sound smart. Making word soup like that obfuscates your message, as evidenced by the off-message conversation we're having right now.
I've more or less given up trying to draw such people into useful conversation, because there isn't enough common ground for direct discourse between me and someone who finds it other than abhorrent to seriously contemplate mass human slaughter as a geoengineering technique. Happily for my state of mind if nothing else, that perspective seems rare enough overall to make largely unnecessary an engagement for the benefit of the audience - put simply, this isn't really a subject on which most people need a worked example.
So, in such a case, I sometimes feel at some liberty to indulge myself, especially here on Hacker News, where the typical user's personal lexicon is considerably broader than you tend to find a lot of other places. Of course I understand that it's not a game to everyone the way it is to me. But I also understand that I'm not the only one who feels that way about it. And I don't really know that there's a lot of grounds to assume, for example, that I'm just "using high-dollar words to try to sound smart". I mean, I already know I'm not all that smart, and I hope I'm not terribly insecure about it; I make myself useful in other ways, and in general I'm just glad to be able to keep up on HN to the relatively limited extent I succeed in so doing.
Some folks just like playing with words, that's all. I've always been one of them. Sometimes, when there's no real need to hammer home a point most people already grasp implicitly and the rest aren't at home to, I screw around a little. You're the first person who has evinced any upset at all about that since before I was in high school. Maybe you're right, and I shouldn't indulge myself this way at all, rather than just doing so very rarely. But I don't really know that I care to stop. I guess I'll just have to hope that people getting bent out of shape over it remains as rare as it has been throughout my life heretofore.