Confucianism has a room for abuse because it puts the monarch as a father of the nation, to which filial piety is also extended. Children cannot kick out their father in Confucian teaching. Mencius advanced the idea of 'mandate of heaven' to fix this problem. Still, it is something which can be invoked as a last resort, because it implies dynastic change and ensuing chaos. It is not like firing your boss.
Chicoms try to revert to semi-dynastic rule via Politburo in order to survive. To bring them down could also require resurrecting another age-old idea, the rise of semi-religious or fully religious sect. A variation of Maitreya cult.
As usual, you bring your knowledge to bear on subjects many of us are less informed on. Thanks.