It's the same reason we still talk about Jung and Freud even though most of their work is considered unscientific nonsense by modern psychology. Taylor was just

It's the same reason we still talk about Jung and Freud even though most of their work is considered unscientific nonsense by modern psychology. Taylor was just popular at a crucial junction when the scientific management zeitgeist first started forming. Those middle ages of the industrial revolution created a lot of first movers we still associate with fields that have long since moved on.