Nick Hodges here -- one of the developers.

I get that objection, and we are certainly very uninterested in that becoming the norm. The idea, of course, is to try to prevent comments that we want prevented and that aren't helpful.

Different bloggers and different communities are going to define that differently. That is why we are making a good-faith effort at allowing sites/people/groups to tweak this as desired.

Thank for your feedback.