How do people there understand the difference between low performers and people who aren't fit for their job? The latter has the sound of something lasting that cannot be fixed, but I'm wondering how it plays out in practice. How do you determine that someone is not fit for their job as opposed to a mere low performer?
I think this comment is the 'RTFM' of employee-employer relations.
Very few things in this world are actually simple enough that this kind of dismissive attitude works. I've seen people who didn't care about giving helpful feedback and second chances, but I've also seen people who agree in spirit, but don't know how to do it well.
