Earlier quoted context omitted.
I don't think there's anything wrong with trying to link to a specific part of an article, though. And in that context I wouldn't really call it editorializing. URLs make this harder than it should be.
In the case of HN, it’s explicitly against submission guidelines and frowned upon.
Trying to submit a subsection of a bigger work, with the closest it has to a title, is perfectly acceptable... if it has its own URL. If it doesn't have a URL, then you're screwed.
One of the few benefits of tweet threads: you can link a particular tweet.