"…. when my grandfather worked there, he hired people there to have a job for life.”"   

That's now how companies work anymore, like it or not.

“Every single one of these people I talked to were saying, ‘I don’t know how I can maintain this face of joy and warmth when I have to go home and forage for food in other people’s garbage,’”

She must have hand-picked a few bitter people who have made poor choices to work at Disneyland, or found a few rare really unfortunate circumstances.