I'm against trigger-happy flagging/downvoters too. On the other hand, I actually like the fact that Reddit's and HN's communities are different in that way. I go to Reddit when I'm hungry for lots of information and want to have a good time, also to get in touch with a broader internet community. I come to HN when I want to know what's making an impact, and that means -among MANY other things- surviving criticism.

So I would not complain because HN needs criticism. I'd rather suggest a technical solution through UX design, for the false alarm flagging mostly.