The real reason why they must step down immediately if even one thing breaks at the Blue House

To be honest, I am currently anticipating one thing: we have reached a situation where they must step down immediately if even a single issue breaks at the Blue House.
For example, looking back at the Park Geun-hye administration, once that one tablet PC issue broke on JTBC, they had to step down immediately.
Seeing that no amount of effort seems to work now, it appears that the public is beginning to doubt the President.