Yet it wasn’t anything George wrote. It was quite the opposite: George never mentioned John Lennon at all.
John Lennon and Paul McCartney had already begun their own heavyweight feud. Following, John and George actually did get physical following a disagreement. Source Cheatsheet)
What happened next, the years of the Beatles, is a story George more or less omits to tell. One minute he's playing gigs with Paul, John and Stuart Sutcliffe in Hoylake; the next it's 1969, the group has broken up, Brian Epstein is dead and George is living with his first wife, Patti Boyd, in "a beautiful Gothic house in Oxfordshire". It's not that drugs wiped out his memory of those years (his powers of recall were extraordinary, says Taylor), but that he preferred to forget. Being in the Beatles was almost as bad as being at school. "There were a lot of things we had to do collectively that didn't grab me personally," he says. (guardian)
By 1980, following the publication of George’s I Me Mine, John felt hurt by the ‘glaring omission’ of being left out of ‘I Me Mine.’ After the Beatles breakup, there were plenty of mean songs written about one another.
George mostly stayed above the fray. On All Things Must Pass, he delivered “Run of the Mill,” expressing regret and sorrow about the band’s demise. In short, George was not one to be petty about a feud.
But that was exactly what John took away from his lack of mentions in I Me Mine. “By glaring omission in the book, my influence on his life is absolutely zilch and nil,” John told Playboy’s Davif Sheff.
While Yoko suggested maybe his editors told him not to discuss John, he wouldn’t listen to the suggestion. He said he was genuinely hurt, and offered a reason why.
Next, John connected that thought with the Beatles’ breakup. “It’s a love-hate relationship, and I think George still bears resentment toward me [10 years later] for being a daddy who left home … I was just hurt. I was just left out as if I didn’t exist.”