You believe. So it applies to projects you maintain. It doesn't mean it applies to project I maintain, or anybody else maintains. So this shouldn't be any more default than any other mode. And probably less default, since people generally developed other conceptions about "defaults" of etiquette in open source projects over the last 15 years.

I'm not exactly disagreeing with you. I appreciate the author's stance, and I appreciate the blog post making it to HN. I think the author's stance should be widely adopted. If they had simply stuck their blog post into CONTRIBUTING.md in their repo, no one would have seen it. Now it's being more widely disseminated, and in a longer form with good reasoning attached.