I'm going to chalk your complete inability to understand what that article said to the fact that English isn't your first language, instead of accusing you of disingenuous spin to protect a singer you admire, and simply once again urge you to not let Lennon's creepy mother lust prevent you from enjoying his music.
Hell, if you it makes you feel better, tell yourself that Lennon probably forgot to mention to Ono that he was hoping to research a book.