There are probably more books, articles and documentaries about The Beatles than any other musical act, except perhaps Elvis. Many contradict others.
This is not surprising. No-one was filming the Fab’s events in the 1960s, there was no YouTube or blogging. We rely on newspaper reports, studio records, people’s memories and what other people have made up written.
It’s amazing that authors can find a fact and stretch it out to a whole chapter of a book, adding in what people were thinking, speculation about the future and other nonsense.
How The Beatles broke up is a bit vague. Ringo seems to have left during the recording of The Beatles album, but came back. George left during the filming of Let It Be, but came back. John left but agreed not to tell the world. Paul did leave and did tell the world.
The exact date the group ended is not clear. Was it December 1970?