It is bc of white supremacy even in real life in ancient times brown hair color was considered plain et blonde extra beauty and so this stereotype continue in manwa. Especially the beautiful crown prince are all blonde bitches who are arrogant and smart and think the world rotate around them. Female blondass are the same
It is really a stereotype in this occidental countries. Even in most japanese isekai the saint is a blonde pure maiden with blue eye. Brrrr. It is just a color of hair and eye. The author in the manwa continu with this blonde thing and it piss me off bc in reality they are normal it is just a color of hair
"HELLO and welcome to the ~~blonde asshole troupes~~ where we break happy families and ruin the countless lives of noble girls for the sake of our political powerrr ~~
join now by selling your noble daughter and forcing her to marry a complete stranger.YIPPEE!!(๑•ㅂ•)و✧