I may never have found this link unless someone had posted it to the front, as I don't have time to read through ALL the articles.
I can appreciate your argument if the article weren't at the top page, but when this post was submitted the other post was on the front (and still is). This behavior reduces the diversity of the top page.
That said, I figured other people are in that same boat. But more importantly than that, I think the quality of the project deserves the extra (if redundant) spotlight. The blog post in its own is a great read, but the author went way beyond a normal open-source contribution by improving and making convenient a large section of archaic, clunky code. This is an incredibly cool, well-intentioned project...someone devoted his time to doing the kind of work that programmers hate to do for their own in-production code, with the goal of educating...and the code repo and the good-willed spirit behind it deserves the attention.