Their parents know and secretly or unintentionally passed their knowledge and resentment to their children.
Do you even watch the first few episodes?
Fixing naruto's biggest plot hole
That's a poor reason to leak info about your nuke. The identity of the Jinchuuriki being common knowledge is a pretty big security risk and was probably what let the Akatsuki find and capture them so quickly.
Anyone else lose all respect for Hiruzen after Part 1? He was a fucking retard that did nothing but fuck up and ultimately endangering his precious village LITERALLY EVERY TIME. Sasuke got no desperately needed attention or parental figure while Naruto canonically spent his childhood hating and wanting to fucking kill everyone just like GAARA.
Honestly, the only thematic part I feel this series actually nailed was showing what the protagonist would have ended up like if he didn't find loved ones or if he gave up on his dreams at any point. With every new development, the adults just kept doing panstu on head retarded shit while not actually thinking what consequences it could have, which doesn't make any sense. Why is Shikamaru the only one who thought up keeping fucking Orochimaru alive as a weapon for starters? Why was anyone treating living superpowered military assets like shit just because they carried a cataclysmic beast ever victim literally died to help contain when they were literally meant to help them and should have been given special treatment rather than conditioned to potentially rebel? Gods damn, why is Kishimoto such a shit writer?
Yes, this is ninja world, no place for wishy washy bleeding hearts, Naruto had his material needs taken care of and that's all that matters.