Someone who would do something like that would almost certainly get fired eventually. The guy is an obvious sociopath and will get into conflict with supervisors and coworkers. The worker-bees at the Disney facility restaurants and parks are probably nothing like the executive suits, in other words, by-and-large normal.
Skilled sociopaths can work their way up to higher levels in organizations, but most are weeded out early.
He was fired before he did this. He was a former employee.
“According to court documents, Scheuer conducted a series of computer intrusions or attacks directed at his former employer following his termination. These intrusions included manipulating allergen information in restaurant menus to indicate that food items were safe for customers with certain allergies, when they were not. Scheuer also altered menu information related to wine regions to reflect locations of recent mass shootings. Additionally, Scheuer launched denial-of-service attacks designed to lock certain company employees out of their accounts.”