Not everyone spends so much time on this site that they can easily spot a post as an extension of a related discussion elsewhere on the site. Someone posted this page, it got upvoted by others who found it interesting, and now it's on the front page. What's wrong with that?
depr|2 years ago
To simply allow these posts and having them hit the front page when they get upvotes is a valid position. But I think it contributes to a website that is less interesting.
I don't think these posts should be removed, but they should at least be frowned upon, and/or linked to the original comment thread.