The very freedom of speech you (assuming you are quent) decry on your home node allows users to edit their replies at will. I strongly support correcting typos and rephrasing things to make them more clear, and I'm strongly opposed to removing answers because they weren't "fast enough" or blanking out messages in a flameup.
I'm personally opposed to removing the ability to edit posts, however. I much prefer community standards to push people to own up to their words and to mark significant updates appropriately. Please don't generalize that that makes me "support outright lying", and please try to refrain from questioning the integrity of the thousands of users you've unfairly condemned.