They may not, but IMO they better. With the Hawaii disaster, sales slower than anticipated at DRR, and the new one at the old river county (Reflections is it?) they can't afford the PR that will come with trying to sell new points at $230 plus and resales plummeting to $40. And once they stop buying back and the brokers/buyers see that, price's will drop like a rock.
I agree the MF's will be paid until the last year, but as of 2042 it all stops. Again, I'm not a numbers cruncher but I'm sure somebody here or on DISboards will come up with the % of DVC gross receipts that will be gone all at once.