The scale may be different but one man with a backhoe still displaces 100 men with shovels. Now it may be one man with a factory of robots displaces 1000 assembly line workers. Or one man watching a console of automated farm machines displaces 100 tractor drivers. In the past it was one man with a cotton gin could replace 100 slaves. or one caveman with a wheel and cart could carry back three knocked out mates to his cave.
(*) except for the last example, man is used in the non gender specific man-kind form.