The top cause of bankruptcy in the US is medical bills. Bankruptcy would absolutely force you to let Disney foreclose an underwater contract, it wouldn't be a choice.
I don't think it's immoral to let the finance company do what they agreed to do, which is foreclose. They made out fine, as did Disney. It's the buyer who lost. There are a lot of reasons you might pay or delay or whatever to avoid foreclosing, but foreclosure is an option that would make sense in a lot of scenarios.
I'm interested if those deeds are
DVC foreclosing for dues, which would be a totally different scenario than the finance companies. I wonder if they also have deeds showing foreclosure? Getting foreclosed for dues would be so sad.