Because it was horribly written, even for a random blog post; and because the time spent reading it could have been better spent reading the Wikipedia article,

Because it was horribly written, even for a random blog post; and because the time spent reading it could have been better spent reading the Wikipedia article, which would have been both more informative and more pleasant. Basically, the author wrote a rehash that is worse than its source in every possible way. The only reason to do that is when you're forced to do it, as with an essay in school, or, in this author's case, an arbitrary requirement to write something for Pi day. But that's still no reason to post it on HN.