I believe this article is talking about senior execs and you might be talking about general employees.

And your comments feel noble but a bit unrealistic to me as far as general employees go.

First, there's a cost to bringing people into an organization. Letting everyone in and then having some or most of them flame out seems like a huge drain on resources -- including emotional resources.

Second, the idea of being tracked daily against some firing metric sounds a bit hellish for employees. It seems like it'd breed a lot of negative reactions ranging from gaming the system all the way to nasty politics and back-stabbing along the lines of what apparently happened because of Microsoft's stack-ranking system.

So, again: I respect the ideas. But I'd be concerned about how they'd play out in real life.