It shows you can go from the worse to what is the best you can do.

Pink had made mistakes, she's flawed just like the rest of the characters that we love and accept.

So with this post I say this:

Pink Diamond is an amazing character who had worked her way through recovery. Her flaws are no more or any less deserving of understanding and compassion than any other characters in Steven Universe.

Recovery is possible, and she's the best example of that, I believe.