Rehabilitation of cheaters.

...and showing that you are correcting yourself and actually correcting yourself are two different things, don't you think?...

How can a person correct themselves if they are not given a chance? First, execute them, and then grant amnesty? Posthumous amnesty isn't very useful.
There are different types of people. Some can honestly admit their mistake and stop doing it. Others will never do so, because it is their way of life, a way of asserting themselves – I'm the best cheater, if you kick me out the door, I'll climb in through the window... So, you need to look not only at the fact of the action but also at the person.
Hunter98 also said something reasonable, I agree (to avoid repeating myself).