I've never heard of Hacker News censoring comments that do not abuse the site guidelines, with rational opinions. This comment thread is being heavily censored. This fundamentally abuses the trust that users have put into this site.
Is it possible that you thought your comment was removed because in fact it was on one of the later pages of comments? That is simple pagination. I tried to tell people about this by pinning https://news.ycombinator.com/item?id=23853229 to the top of the first page.