There is more going on here than real estate transactions.
You’re pushing an irrational standard. Simple.
That doesn’t mean there is any real good reason to meet such a standard. Simple.
Best wishes in your self-styled irrational standard for history and spirituality. There’s no doubt that it’s impossible for you to have arrived where you are intellectually with such a standard, because no one else in history could meet that standard.
Of course they could.
Napoleon left an extensive record. His opponents left an extensive record. His generals wrote. His inspector general of bridges left behind one of the greatest graphs of all time.
Julius Caesar left behind a book, written by himself. Augustus had various courtiers who wrote about him and his family. They were deified after death, and left much behind to include various statues and buildings, and the rostrum in the Forum. I decline to judge the nature of the divinity that was bestowed by men upon other mean, but that is what real events look like.
Jesus: no evidence of anyone writing about him for years after his death. He never seems to have written anything. Yet his followers make the greatest claims on the basis of nearly no contemporary evidence. Fraud
Mohammed’s followers conquered much, and after that developed the Qu’ran and Hadith to justify themselves. Another mismash of conflicting fables. The late authoring of the Qu’ran and its single version are explained not by fraud, but rather by the assertion that hundreds of people memorizing what Mohammed said, even when he was a small town bandit. Fraud.
John Smith invented books from whole cloth that differed from all the archeological evidence, by claiming magical translation. Fraud.
Great claims require great evidence. Meet the standard of evidence for Caesar, and perhaps we can talk.