If you're referring to the post from yesterday, they actually relicensed it as Apache 2.0: https://news.ycombinator.com/item?id=45196173
And of course it doesn't help the tedium of reading HN that there's 5 very vocal commentators who want to the world to know that "OSI doesn't own the definition of open source", even though when asked will define open source as "can be commercially restricted".