The application examples are not in the linked text and I have found them interesting and useful for my understanding.

I think the comment is clearer than the linked content as a basic explanation. The linked content covers "the difference" with two bullet points, and uses the term "origin server" which isn't super-intuitive.

Many HN readers only read HN comments, not the articles themselves. Sad but true.

One can only be bombarded with Medium popups and other modern web annoyances for so long… I typically gain more from the comments than the articles themselves, but YMMV.

I like the consistency of HN's style, instead of being pushed to a random website that may have all kinds of pop ups and distractions. I wish there was like a "HN Reader Mode" that would convert the content of the website to look like a HN comment for me.

OP started their comment with: "Forward and reverse proxies is an important concept that a lot of technical people don't know about but it's really important... I'll explain them in as few words as possible..."