They're furloughed, not laid off. I doubt they'll lose anyone who wasn't intending to leave.
I get that John is down, and I definitely don't have whatever insight led him to say "even if I'm lucky enough to return someday, other people won't be". From my understanding though, a huge portion of corporate around the stores and parks was furloughed because there's not much for them to do at home. Their healthcare is covered and kindness aside it doesn't make much sense for Disney to bleed money. But this wasn't a covert layoff — when things get back to speed Disney wants people back.
Edit: And furloughing the employees allows them to claim unemployment, so that the US government can absorb the impact rather than Disney. Not pretty, but rational in a time of stimulus.