It's interesting that Disney felt the need to edit the lyrics for an audience that is likely the same age as the kids who listened to the original. It really shows how times have changed.
Could be a deleted scene, an alternate scene, or just hype to keep the Descendants franchise alive. There's the show of course too but it's animated.
Oh the show, i forgot about it. Sofia Carson did a different version of "Rotten To The Core" for it and it also got a music video, so it could be that!