All the books of the protestant Old Testament DO either make a claim to divine inspiration or a claim to divine authority either explicitly such as "Thus saith the Lord", or implicitly such as the book of Esther when it provides authority for the celebration of the Jewish feast of Purim.
How is a claim like "Thus saith the Lord" different from a statement like "Long John Silver said"?
in matters of belief, accuracy is colored by what we prefer to be true...
So it has nothing to do with "accuracy".
... though some critics allege that human nature prefers the God Who Is to NOT be true.
Not me. I'd be perfectly fine if "the" God was real. I'd also be perfectly fine if leprechauns were real or if the flat earth was real or if perpetual motion was real - but I can accept that none of them are.
What is it specifically about the God I market that you think is dishonest?