It seems more people are concerned about people being concerned with post counts than there are people actually concerned about post counts. I don't see why it is a big deal, I couldn't care less what my post count is or what my "rank" is. I post because I have something to say, not because I want to increase a number.
In anycase, I think hiding the post count would be stupid, it won't solve anything, pointless posts will still exist.
