Keep in mind that when evaluating a research proposal, Facebook will have zero interest in evaluating the "good faith"-ness, or "well-reviewed"-ness of the proposal. And to be fair they are probably not qualified to do that, and would have no incentive to become qualified.

As a business, making a business decision, they'll want know "can this come back to bite us" (and they will miss many of the ways that might happen), and, how much will this benefit us either in money or in facilitating new ways of making money with the new information.