Because the subtext matters. JHH is giving the standard 20th century industrialist answer to the question of what automation does to employment. Keep in mind that from ~1970 onward, worker productivity went steadily up while leaving behind their pay.
JHH is promising more of the same, albeit perhaps for white collar employees.
Dario is predicting job loss as a way to promote his business to the sort of people who might enjoy such things. He's more of a reverse luddite than JHH.
Either way it sucks. You get fired or entire job sectors see wage depression for working harder and being more productive. At least one of them (Dario) is willing to say the quiet part out loud.