While I agree with you on some levels I would also like to know who released the information about Naruto being the Jinchuriki, but you have to put the fact that Hiruzen did help Naruto but he also manipulated him slightly when you think about it, I mean you tell a story about a man who protected his village at the cost of his life but gained so much respect for doing it...of course Naruto was going to jump at it so it works both ways...could Hiruzen of done a better job you bet yeah.
But compared to Jiraiya and Kakashi man those two I'll start with Jiraiya granted the guy was needed for spy work but he left his godson to the wolves basically I was disappointed Kishi never showed anything about that personally I would of been angry however he did slightly make it up to Naruto.
Now Kakashi that guy is worst than scum to me, Minato trained Kakashi treated him like his own took him on special missions taught him special moves yet doesn't have any interaction with Naruto until he's 12 what, then he starts giving Sasuke special lessons and during the preliminary rounds he didn't even notice his students chakra was all messed up he was too focused on Sasuke, and also with him refusing to train Naruto I know he did because Jiraiya was going to take over but did you see who his replacement was Ebisu, then once Naruto learnt the Rasengan he had the nerve to try argue that Naruto was too young for that move when he had taught an assassination move to an avenger who would do anything for power.
And the after Sasuke left only then did Kakashi take an interest in Naruto's training, personally I probably hate Kakashi the most in all of Naruto.