It is even more shocking that those in the know already knew about Yong Hye-in

Now that the issue regarding Yong Hye-in's underground organization has become a hot topic,
progressive panelists are acting like they already knew because there had been a lot of talk about it before..
If that's the case, it means the political circle knew about it at the very least; can't the Blue House conduct proper character verification?
https://youtu.be/eVDUAMcQ6c0?si=9OwNdCooaV6H4Bi4