You might not always, just as we don't always keep humans in the loop when picking groceries for delivery[0]. Great. But that doesn't mean we can do that en masse.
You can give a workman a power tool and he shouldn't instantly assume that his housebuilding job is under threat, because corporations will build a house-building power tool.
Why won't he think that? Two reasons: 1) any tool that becomes more powerful tends to become more specialised and expensive to operate, so an electric drill doesn't scale to a house-building drill without incredible tradeoffs, and 2) he isn't reading a million breathless class warfare-igniting articles whose writers are paid through attention.