Im not american and i agree that kishimoto can do as he pleases but dont say that is logic or that makes sense something that right now is out from any understanding (maybe it becomes clear at next chap but for me its such a great contradiction from what we have seen till now that i cant understand it).
I was arguing that it should be more difficult to be a medic nin(most of the medics are old guys in the chunnin exam we saw them) than learning combat jutsus, so that it should take more time and dedication. By what u say Kishimoto can say tomorrow that naruto is an alien that can transform into a bath and throw plasma misiles but for me u have to be consecuent with a plot and a way of writting and not to reajust it as u please(its not a law only common sense, after all is only an opinion im not going to tell kishimoto how to write his manga, i like it very much but this kind of things make it stagger in credibility in my opinion).
We will see how she teaches sakura but i think that is going to be a personal guidance (not all the day wirh her but teaching only sakura) that from my pont of view is quite absurd being hokage, if it makes sense for u then that u understand more than me, be happy.