I think it is the perfect storm, but not for the reasons you mentioned.
Disney may not be able to open for an extended period of time. Disney (and also large stadium events) are "super spreader " events, and Disney attracts visitors from all over the world, so it is a world-wide super-spreader.
If Disney opens at greatly reduced capacity, can they make money? And would DVC members be able to participate fully at a greatly reduced capacity?
The pandemic fighting playbook envisions using social distancing to slow the spread of the virus to a very low level, then reopening the economy. In this scenario, it is known that the virus will break out again at some point, requiring a rapid shut down (because the virus spreads at exponential rates). The goal would be to make these subsequent waves shorter and less severe over time. This continues until there is herd immunity or there is a vaccine.
Unfortunately, the scenario of unpredictably shutting down the economy is not good for the travel industry. People will shy away from booking travel, knowing they may or may not got summarily cancelled, and may or may not get their money back. Not to mention the risk of death. DVC point rentals is the worst case example of this, because of the no-refund policy of most rental contracts.
The subsequent waves could be made much less severe through large scale testing and contact tracing. But this does not seem to be in the cards for the US.
We may not get to these subsequent waves, because the states are reopening well before the virus is under control. Things could get pretty brutal. (Hope I'm wrong)
A government can reopen, and you can't sue the government. An elected official can make the trade-off between the economy and the lives of its citizens.
A corporation can re-open and totally get sued for the preventable deaths it caused. Disney can run models of how many cases of Covid-19 would arise from an outbreak in its parks. These would lead to additional cases as a-symptomatic guests return home and infect their families and friends. This would lead to deaths that could be tied back to Disney's decision to reopen. Disney may get sued by frustrated members wanting them to reopen as soon as the Florida massage parlors do, but the liability from these nuisance lawsuits is chump change compared with the liability from a large number of wrongful death suits. And would Disney's internal conversations about re-opening be discoverable in these lawsuits? I am not a lawyer, but I am guessing, yes.
What is the resale value of a DVC contract in an era where Disney is shut down for a long period? or Disney shuts down intermittently with little notice?
Let's say we get a vaccine. Yay! That does not mean that another pandemic cannot occur. If you liked Covid-19, get a load of Covid-26.
So yes, a perfect storm.