You guys kind of applying our modern world values onto this but in this world commoner kids much younger than him already forage in the forest , kids his age already working or learning their job.
He is the son of the lord of an entire duchy , his responsibilities ahead are great.
To neglect and not prepare him for what is coming is way worse than giving him an eyes opening experience like this.
He will also to be expected to show off some of his education progresses ( etiquette, perform with a music instrument) at his debut as a lord‘s son along with a bunch of other noble peers his age so he will literally embarrass himself like an idiot.
In this chapter he was trying to wield his status as a leverage to get away from duties which is a big no no , showed how bad his education progresses are and was overall being disrespectful toward Ferdinand who is his uncle (due to his grandma‘s influences who is also a VERY horrible person , wont spoil what she did during her time being the first wife of the ex lord).
You guys are saying that Rozemyne is unfair because she has the memories of an adult , while that is partially true because she brought knowledges and inventions from modern world over to turn profits and able to negotiate with adults , she also has the stamina of a VERY VERY sickly child who is still very not healthy and constantly need help physically during her daily life.Even for an adult that kind of schedule is insane , its like working 2 full time jobs so they didnt really expect Wilfried to do remotely a fifth of her actual workload , just some really basic stuff like listening to people for a bit , tour the workshop and learn the contents of some prayers…probably the equivalent of a half a day worth learning at elementary school.
Now ask yourself do you really want a nepo baby who is ignorant , arrogant and knows jack shit to rule over an entire duchy ?