It's definitely not "no one is willing to go" but it is a reduction from "normal" - obviously one data point but there was that survey that said 72% are not willing to visit a theme park. If that remaining 28% is now your available pool and those people have to be willing to travel to Florida and pay the price for Disney with a reduced experience (even if they add some discounts it's still not cheap ... Even Universal with their programs is not cheap, it is a chunk of $ to spend) - add in uncertainty around the economy, travel restrictions to/from a lot of states, etc ....
With all that I can understand Disney saying that there are k my so many people we will get in the doors no matter what we do, and better to cut expenses and just make what we can off those still willing to come
Now, I do think Disney could treat the passholders a bit better and they could ramp up the number of people they have handling the phones, etc - basically they could portray the "look, we know now is not the best time for us or for a lot of people and we are ok with you not coming now, but we really want you back in the future"