The story of the reluctance of the sons of Jared again parallels the reluctance of the sons of Mosiah. In Moroni’s vision of the world, this would be a repetition of the very same pattern. The kings (and their attendant social hierarchy) were one of the ultimate reasons for the demise of the Nephites, and Moroni would have see the story of the Jaredites as similar. While it is possible that this information was clearly represented on Ether’s plates, it is also quite plausible that it has been manipulated into a form that makes it appear so remarkably parallel to the Mosiah story that Moroni clearly knew.
The main difference between the Mosiah story and the Jaredite story is that there was an obvious turning point in the nature of political leadership. This inheritance crisis among the Nephites led to the dissolution of the kingship, and the establishment of the reign of the judges. No matter what may have been parallel in the Jaredite story, the very clear history of the Jaredites involved kings. Moroni might be willing to massage history into its obvious (to him) parallels, but he does not violate the history by forcing a parallel that did not exist. This did establish kings among the Jaredites.