It looks more to me that it is likely some inexperienced person just made mistakes, e.g., whoever prepared the new waivers does not even know AKV is one DVC Resort, and thus there only 15 DVC Resorts, and probably just assumed otherwise because the reservation system is set up to allow members to reserve Jambo and Kidani separately.
Under the POS documents, there is only one AKV DVC. The only way it could legally be made into separate DVC's now is via a material change to the POS approved by an actual vote of all the members, i.e., DVD/DVC cannot do it without such a vote.
And since that is a mistake, the implication that Riviera is now resale friendly, when nothing formal has been issued by DVD/DVC to change the applicable language in all the POS-related documents for Rivera that say otherwise, is also likely not true.