While I certainly wish Graham the best with his health, his ideas about the past are not only unsupported by actual evidence, he relies on misrepresentation of the archaeological, textual, and narrative evidence he does present to make cases based on ideas that have their roots in 19th century fringe narratives
And the idea that “mainstream history INSISTS our civilisation only started 6,000 years ago” is also a misrepresentation of what archaeologists and historians actually have to say about the ancient past, human culture, and the concept of “civilization.”
Graham may feel we ignore or dismiss evidence, but what has he actually done to address this? Despite the wealth and notoriety he’s gained through skillful media manipulation he has not to my knowledge contributed to a single archaeological project, a single site, or responded to any scholarly critique of his work with anything but outrage.
That’s not how we actually learn things or make progress. But it is how Graham makes money.