Sure, HN is a curated site. Posts get removed from the front page all the time. This can be because of user flags, software action, and/or moderator action, in any permutation.
Edit: we don't moderate HN based on who is being criticized or praised, be it Apple or anyone else. If you're noticing stories criticizing Apple getting removed, you're probably a critic of Apple. If you were a fan of Apple, you'd notice stories praising Apple getting removed. I call this the notice-dislike bias (crappy name, but I don't know a better one): https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que.... This bias dominates people's perceptions of HN to such an extent that I don't think I've ever seen a single counterexample.
