Okay, it's getting EXTREMELY gay that everybody in the narutoverse is related to each other in some form. Can't we have a villain appear out of nowhere that wants to dominate the world? The last villain that wasn't related to everyone else was Zabuza!
So, we know Itachi's related to Konoha. Now Pein and Kanon are Jirayia's disciples? Orochimaru was also Sarutobi's disciple...it's getting ridiculous! You can link everybody to each other.
For example, Pein is related to konohamaru. A thought that should be completely outrageous, but, Pein's teacher was Jirayia, who's teacher was Sarutobi, who's grandson is Konohamaru. Three easy steps and now Pein has a relationship with Konohamaru in some way. This is exactly why we get shitty theories like "xx is XX's father." Because Kishimoto's become so fucking predictable that everybody IS related to Naruto.