Olive Branch, the Big Bad for Families, manages to share a few qualities with Chrysalis, the Greater-Scope Villain for the Nuptialverse: both can easily sway people with their words and can turn people against anyone they wish, but once something goes unexpected, all their plans start to unravel as they make questionable move after questionable move. Kind of fitting once you think about it in a sense that Olive Branch would be Chrysalis if she didn't beat Celestia.
In that same regard, the outcome of the entire arc is the result of what would happen if Chrysalis didn't have any trump card to fall upon. And if Luna actually did something.
