you are right and wrong.
I am pretty sure as a christian i could tell a more better accurate version of the exodus then he ever could because he is known to say anti religious comments. Which is even more ironic he did a movie on a religious story.
However, i do think some atheist could tell a accurate story because they look at it for the meaning and as a book, but this director i do not think csn do that as he comes off as a hater to begin with.