"would that be considered depressed?"
The article refers mostly to the absence of anger from the adult diagnosis of depression, and talks about how it may be valuable to include it. To be considered depressed, I would say that the individual would probably have to fit other metrics for the diagnosis for depression as well.
"Where do we draw the line"
We don't, really. Mental health is a complex spectrum of behaviors. Perhaps Jobs was depressed, perhaps he suffered from some un-diagnosed OCD or he had symptoms from any number of other known psychological issues. Maybe he just learned to be a dick early in life and that was part of his personality. If we pick apart peoples personalities and compare them to symptoms, we'll find a fit for everyone, but that isn't really helpful anyway.