It would seem to me that it's not just an issue of staffing, but there's also a need to make sure that the areas they're re-opening to guests are safe. I manage a business in the Mid-Atlantic and following hurricanes or snowstorms here, it's not just a matter of staffing that determines when we can open. We also need to make sure there was no structural damage to the building that may create a liability for us. With the huge scale/footprint of each park, I imagine this is a huge reason why Disney Springs is open and not the parks at this point in time. (Although I'm sure staffing-wise, it makes more sense to try and open the smaller landscape of Springs as well.)
For the negative comments about Disney opening "a shopping mall" as opposed to the parks, this negativity is one of the reasons I lurk instead of post on this board. Not that Disney isn't often deserving of negative comments, but being negative about this? Makes no sense to me. They didn't have to open up anything.