Sure. That Party City gift card bought last week may not be honored today due to bankruptcy and certainly won’t be honored after the stores close in a couple months.
No, that argument applies to the owner of the gift card accounting for the fact that the gift card may not be used (and isn’t a great method assuming they intend to spend it and expect to get the full value).
What I’m talking about is the provider of the gift card writing off some portion of the liability of gift cards they have sold that people will never spend because they forget about them and lose them and so forth.