Can robots replace burger-flippers? How about lawyers?
Tools have been around for thousands of years, making a human job faster and easier; try banging a nail in without a hammer.
Machines, complex combinations of parts that are either human-operated or human-started, have existed for far less than that. With a Gutenberg press, you can print hundreds of copies of printing with just 1-2 people operating the machine. A washing machine will wash your clothes after you just press the right buttons.