Yeah, this theory it's the most plausible now.
Both Jiraya and Naruto, they never got the girls. Even in her dreams Tsunade was more into that dead stud that no one gave a kitten about... Why does kishi do that? dedicate entire panels and chapters of development for characters that are literally new, have no impact on the story and nobody cares about? Like dan... jezz seriously.
You cant say this about the 2nd Mizukage Gengetsu because he was interesting and awesome and also showed us something cool "no one tought he was the strongest of his generation but he was" looks can be decieving and also showed us what the Hozuki clan could do.
Wrong. Read Bakuman. WSJ changes the mangakas' editor once every few years to rotate them around. The aim of this rotation is to give newer editors some experience, and Yahagi was a veteran. Yahagi moved to Jump Sq. As one of Jump's veteran editors, it's obvious that Yahagi would get picked to be E-i-C at Jump Sq. Not to mention his Naruto fame.
Now, it's very obvious that the editor who replaced him was a noob. Seriously, is this some kind of kitten move from Jump? I don't know if Jump had too much confidence in Kishi's ability, or if they simply had massive brain fart, but you do not let a noob handle the #1 world famous manga. You don't.