Maybe you didn't read the article. They didn't suggest putting on kids gloves and siting your references. In fact, that was explicitly rejected as a good approach X) "Telling them their wrong" and X) "Telling them not to be rude".
So here I am, telling you you're wrong and that you're rude. The irony isn't lost on me, but I really don't have any idea how I'm supposed to "signal that I'm genuinely interested" in your argument here.
> There’s a misconception that good faith discussion only happens in close-knit communities like LessWrong or HackerNews.
I'll have to look at LessWrong, but I think it's a misconception that good faith discussion is common on Hacker News... Many (most?) comments here seem to be about inflating ones ego by showing how smart or virtuous one is.