My guess is because it violates the HN Guidelines.
"Off-Topic: Most stories about politics, or crime,
or sports, or celebrities, unless they're evidence
of some interesting new phenomenon. Videos of
pratfalls or disasters, or cute animal pictures.
If they'd cover it on TV news, it's probably
off-topic. "
https://news.ycombinator.com/newsguidelines.html
You should probably check out the FAQ, too:
https://news.ycombinator.com/newsfaq.html
