I think that's because the Lee fight i over almost before it starts. Lee frustrates his opponent and gets smacked briefly before Gaara shows up and they pound the shit out of the guy together.
I just got done with seeing Sasuke break/dislocate the shoulders of that Zaku guy in the Forest of Death so I still have a ways before that fight starts.
I hate it too.
I also think the Naruto not knowing some shit was a big WTF but when you think about it, Jiraiya is always portrayed as a badass fighter on par with Orochimaru as well as being a potential Hokage candidate but he was never portrayed as a good teacher the way Kakashi, Iruka, and even Yamato were. He's always portrayed as a bit of a bumbling fool once it comes to teaching. Choosing hot spring locations to peep while he tells Naruto to try something and shit.
Was Jiraiya a good teacher though? Minato, Pein, and Konan are all portrayed as incredibly studios types while Naruto is portrayed as a guy that is well, pretty bad at everything he does until it just "clicks" for him.
Like, he can't do a standard replication clone decoy technique but he can achieve the much harder physical clone technique almost first try.