I've seen people fired for similar "unsafe" bullshit. Literally anything can trigger these deranged individuals. They're just out to play victim and get attention.
And no, I don't think all toxic workplace behaviour is like this, many places have narcissists and similar types roaming the halls making things extremely traumatic for many people. That stuff is real and I feel for the people that get out through the ringer by these environments.
But a book? 6 years ago? In the context of a zombie apocalypse hypothetical? Get the fuck outa here.