Review Detail of Masterofall1 in The Witcher: Of Serpents and Blood

Unfortunately, the story is ruined by a lack of understanding of the Witcher universe, with there being inconsistency in universe, I could understand if it was an AU but it's not, but the major issue I have with the story is the main character personality, he's supposed to be scheming, cunning, intelliegent, and manipulative, but he somehow can't resolve a conflict between him and 3 other children for years? Like really? He couldn't have just Idk, accidentally upped their intake of hazardous substances? Or falsely taught them, so he's still at the top? Another thing is the main character's thinking/talking, he talks like an edgy 14-year-old, and xanxia protagonist, with 'hating all humans' having extreme hatred towards minor grievances, etc...