I regularly read HN threads that end up in discussion of Section 230, and find many posts that contain these same wrong ideas about what the law means. To that

I regularly read HN threads that end up in discussion of Section 230, and find many posts that contain these same wrong ideas about what the law means. To that extent, I think you're giving the author of the article too little credit, and the general discourse too much. Clearly that's my subjective experience, and YMMV.