Agreed. I was thinking about what the motivation could be. I mean, they haven't even declared all of RIV's points, so what could make them want to ROFR 250 points at $121/point?
Simplest explanation, I suppose, is that it matched a unit they previously ROFR'd, so maybe they figured might as well grab 250 more points in that unit to give them the maximum amount of flexibility to sell it.
If you're someone who thinks Disney cares about the resale market and how that affects direct sales, I suppose you could imagine Disney trying to boost the RIV resale market as they make a final push to sell it out - give direct buyers some comfort that Disney won't let the resale price drop too much. But, I'm very skeptical Disney cares about that to any significant degree.