Rooms for points was always a way of "giving" something for nothing. The rooms are empty so give them away for points which are given as "incentives" for other money-making propositions.
This PONZI scheme fails when no one will pay for the time shares or hotel stays.
So Marriott tries right now to scrape back funds by increasing points requirements this year for awards, but WILL find that unless the consumer sees value, the whole timeshare/points system will be seen as a fraud. This will ultimately kill the time share business.
They should support the time share business right now as more and more rooms are vacant by "giving them away" to their best customers to keep the base for future sales growth.