Non-sense.
Even in the US WARN act is usually respected by most big enterprise even if not specifically bound by it's scope. The notice requirements are all real.... the difference is most companies skirt the definition by simply paying the people during the period and say 'don't work' instead of starting the actual separation right away. Basically notified now, paid to do nothing, and actual separation being something 60 days out.
No employees like the uncertainty of knowing a layoff is announced but not knowing who is impacted - but having a blind instant cut is NOT better. It usually is everyone getting axed entirely instead of trying to identify which employees you are trying to rebalance or shift elsewhere. And in Disney's case, this is also part of a restructure - not an exiting of a business or segment.