Good LORD this is why Kiershka is such a complete and utter brat. Complete lack of discipline and indulgence of his every whim - there's no feedback telling him what right and wrong is, only that whatever he wants to happen is right and that what displeases him is wrong. It's the perfect conditions to make a sociopath tyrant.
To be exact, it is a political decision. He cannot allow the news of "a commoner humiliating a Noble and getting away with it" spread since it affects their reputation. But yes, it is a horrible environment to raise a child.