Why should it be? The world is more complex and nuanced than "Nazis bad". Yes, they were horrible and despicable. They still enacted some effective policies, and many of them were socialist in nature.

Well it did end up getting flagged and removed. So wherever you think "the line" is for acceptable Nazi apologia on this website is misplaced; tread carefully.

The comment was killed by downvotes and flags within an hour of it being posted. Regarding your claim, you're welcome to point out any such users and comments that are not flagged/killed or banned. We act immediately when we're alerted to anything like this. Our email is hn@ycombinator.com.