I can't respond to this specifically unless you give specific links. Sometimes, there are extremely bad comments which we've missed—we don't come close to seeing everything that gets posted here (https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...). Other times, though, people put extreme labels on comments they don't like, and basically want us to ban everyone they disagree with. Also, no matter where one draws the lines, there are borderline cases that require judgment calls and interpretation, making it impossible to please everyone.

We do not moderate Hacker News for "decorum".