She was the Program Manager, and I don't think that she's taking credit for anything here.
She's obviously open to reviewing her decisions and opinions, and that's more than most people are able to do. I think your criticism is a little undeserved based on this article.
PM actually stands for "Product Manager", and she wasn't in a position to directly kill anything, though she was very much against the ads (the story makes it sound as though she quickly changed her mind, which is not what I remember).
If she was still very much against the ads after seeing your implementation, then yes, the story is very different. It says she changed her mind while waiting for you to come into the office after your all-nighter implementing it.
She's obviously open to reviewing her decisions and opinions, and that's more than most people are able to do. I think your criticism is a little undeserved based on this article.