European countries literally have no legal concept of at-will employment. They have strong social nets that make quitting your job much easier, and more prevalent unions that fight to improve working conditions (all of these things are, gasp, political! incidentally)
By comparison employment in the US is messed up enough that if you leave your job you lose your health insurance. Companies with great policies can sometimes retain employees on that basis alone! Is it really any wonder that “politics” ends up being an issue in the workplace when your employer literally controls your access to healthcare?
All of this stuff is emblematic of a deeply unhealthy relationship with employment in the US. Despite widespread agreement that this arrangement is bad, the US political system is broken enough that changing it feels all but impossible. CEOs like Brian are taking a hard stance against the effects while ignoring the causes.
You’re right that such a thing is only possible in the US, you’re just wrong about the reasons why.