There's no question employees leave TWDC in some disillusioned state on a regular basis.If, as is suggested, Disney relies on public perception to increase it's potential labor pool and recruit good people while keeping costs relatively low, then it's unfortunate for them that circumstances, and Disney's reaction to them, caused that perception to become tarnished in the eyes of many. Disney's most valuable asset (and driver of future profits) is our perception of Disney, in my opinion.
But in the heat of a global pandemic--when we had no idea when or *IF* such entertainment services might return at prior levels--it's difficult to second guess handling of a US parks & experiences workforce that cost somewhere north of $3 billion annually. Especially when government handouts were effectively incentivizing employers to let people go.
Disney did retain tens of thousands of workers in the parks & experiences division. Everyone who was laid off was certainly recalled. Even if Disney had handled things differently, the increased competition for labor gave everyone more options. Some sense of loyalty or appreciation wouldn't have kept everyone around. Disney does still attract good workers, and those workers benefit from having "Disney" on their resume. But to many people, it's still just a job. Keeping everyone on the payroll during the pandemic wouldn't have changed that outlook for 70k+ workers.