But this question in particular is discouraged. Follow HN for any length of time and you see the answer. If you want a meta-thread about posting, create one. But this thread is (was) about security.
All communities have some degree of self policing. Those that allow any commentary to go by usually end up embroiled in vitriol and snark. HN strives to keep a specific level of intelligence (to varying degrees of success). As was stated elsewhere, and I mean no disrespect by this, if the community-enforced standards of comment quality do not appeal to you, you have the choices of (A) not commenting, (B) spending more time asking yourself if your comments will be deemed acceptable by the community or (C) leaving.
I too like to fire off witty, snarky comments. But after a few of them got torn apart vote-wise, I now spend more time asking myself if I will be adding anything useful to the discussion. While I try to refuse the allure of groupthink just so I can get the rush of seeing my karma count move up, I do attempt to at least find a way to state my opinion in a way that is palatable and intelligent.