It's not their first switch. It really will only matter to those that have deposited points and those are good through 2023.
I bought DVC to use and not to trade out. So, epidemic comes along and changed this for many, although not me as I was lucky enough to get use out of all my points.
RCI has a lot more members and options than Interval. I think they are twice as big. But for those not interested in depositing, it doesn't matter.
I would attempt to rent my points and use the cash to buy a week somewhere rather than putting my valuable DVC points in a trading company.
The best value for DVC points remains Disney, or recoup your cash through rental. My opinion only.