I have no intention of reading Dawn of Everything but reviewers have noticed references that say the opposite of what the authors claim they say.
In the language of this essay [1], Graeber's work is legible, Harari's not at all.
[1] https://acesounderglass.com/2022/02/07/epistemic-legibility/
It felt like he set up a windmill separate from reality to tilt at.
I do agree that Harari is great for thought piece stuff, I put him in the same category as Gladwell. Entertaining to read, but not to be trusted as a singular source.
Graeber was a self-proclaimed anarachist. His books indeed have a different description of reality than the orthodox description of reality. If you don't agree with his description, then it will indeed look outlandish - the same way an atheist's and religious person's descriptions sound outlandish to each other. If you do agree with his descriptions, or at least that there are many different conceptions of the world, then his views are more reasonable.
Harari is not making scholarly arguments at all, so we cant even say much about his books.
Harari write pop sci, a grand narrative with many liberties with both history and science.
Graeber's books are heavily referenced pieces of work. Debt: The first 5000 years ends at 73% on my Kindle, because the remaining 27% of the book (144/534 pages) is references and footnotes.
Their books are not in the same intellectual category.