Ok, refreshed my memory. In think in the case of Lance's original answer it was (or would have been -- didn't chase the edit trail) to edit out the offensive "heresy" reference -- in part because it's doctrine but mainly because it was being used in a rude, provocative way. (I can't speak to his intentions, only how it came across.) I see in your comments
here that you think editing is worse for users than deletion; I'm curious about that.