This is weeniedom. If people are too sensitive to comments, then they should not post in the public area. If they insist on posting in public, then they need to stand by what they say and the community has a right of reply. Anything less and it's simple drive by graffiti.
At least you know the comments are closed on these before you even respond. What annoys me even more are the ones that the OP screens the replies. You can type up some major response only to find out it might never be posted at all. Those are where the through-the-monitor-internet-slap button would come in handy.
Listen up losers - the quality of your contribution is not relevant. What is relevant is that you are to much of a weenie to stand by what you say. If you don't want comments, mark your post private and stop wasting other people's space.