https://news.ycombinator.com/item?id=3496269
Two hours after this was posted someone posted the link within that comment as its own story:
https://news.ycombinator.com/item?id=3496475
Normally it's not a bad thing to have a new discussion if the subject is too tangential to the main item being discussed. But this is close enough that the discussion probably ought to have happened directly within the thread.
Additionally, the person who submitted it as its own story received (as it now stands) 145 points for the effortless submission, far more than would be likely for even an incredibly well-written and researched reply within the original thread.
HN has gamified participation by rewarding people with karma. Even though it's only a bullshit number, it triggers a desire to maximize this number. As it stands, submissions are too highly rewarded relative to the value and behavior like 80+ submissions per day results.