The scariest part of this line of thinking being so common is that it has happened! We've bench-marked humanity towards productivity before: dosed drinking water with amphetamines instead of fluoride and outlawed art and mandated labor at tank factories. Productivity!
Down that path lies authoritarianism, but more than that: down that path lies mass murder. What could be more productive than removing those who block productivity?
I appreciate your comment but I am always blown away by how kindly people respond to that idea of "unworthy activity", as if its not one of the cruelest ideas a person can possibly have. It's more common here because it's a community of engineers - we work with complex automations all the time - so it's only a natural mistake to see humanity as a complex automation too, and want to engineer it. But I still can't forgive the callousness.