The problem is that when an article gets shared on HN, people hold it to unreasonable standards of clarity and correctness... the kind of standards that are usually only achieved with careful editing. It's appropriate to level that kind of criticism at a textbook or a Wikipedia article, but the feedback is unwelcome for simple blog posts like this.

There's also a weird current of pedantry here, like "I understood the article, but someone else might misunderstand, and so the article should be clearer."

I only said it would be better if it were clearer. I'm not arguing that it's unfit for HN or any other venue. You're reading much too far into this.