Just yesterday someone posted a comment with links to UI design libraries that I've been subconsciously wishing for in my dreams (humaans, undraw.co), and I used it in a product demo. As a self-taught technologist, HN has exposed me to SICP, functional programming, and just yesterday someone posted a book about Data Structures and Algorithms that I started reading. Dang was quoted as describing HN as a "hall of mirrors" or "fractal tree."
The author's focus on the controversial political parts of HN seems to me like going to a music festival and commenting on the food trucks. Yes, it's part of the experience, but that's not why people go and not what makes it magical.
Communicating the beauty of unfamiliar technical topics to a lay reader is much harder than politics, but the New Yorker has done well at that elsewhere (I like the Sanjay and Jeff profile). Moderation is an interesting topic in its own right, though, especially in the age of the IRA and meme-warfare.