The fact that this franchise literally changed the world of pop culture and its no surprise that even its creation has become mythologized.
I agree with
Gregatron . It was a team effort to which everyone involved played a part. Giving more or less credit to any particular person feels kind of absurd considering that without a single one of them, even down to the caterers, and the film may have never seen the light of day. If anything it highlights the absurdity of the Oscar's to only honor the faces of those on screen and barely give credit to the rest of the production who do the bulk of the work.
My curiosity about this look behind the curtain is that it seems to lack the veneer of perfection that often plagues similar retrospectives.