There's a huge and significant difference between throwing things in other people's faces in order to hurt them, and reminding them of where they've come from as an instrument of change that heals.
I think it's very difficult to make meaningful changes in our lives without confronting our past behaviors, which include our thoughts and words. Burying such things as part of the past runs the risk of repeating what we refused to attend to previously. I also don't think that the practice of doing this on SR has been abused, and the often extreme emotional reactions when it's done betray an unwillingness to look at ourselves in a healthy and objective way, while highlighting the intense pain that we're nurturing.
Here and IRL, I've witnessed and experienced the power of confronting our past as transformational experiences, while keeping the lid on things tends to nurture the status quo, ultimately making things much worse.
I don't make the rules; I only observe them.