It's not about trusting coworkers, it's about creating the right security habits so you don't leave your computer unlocked in situations where it is easily comp

It's not about trusting coworkers, it's about creating the right security habits so you don't leave your computer unlocked in situations where it is easily compromised. And it's about closing of the easiest attack vectors (open laptops, reused or simple passwords etc) not about nation-state level hacking possibilities :)