There's a famous theory that Gantt charts were actually created to keep decision-makers on the dark while Gantt could have some freedom to manage in a way that worked instead of letting they dictate some way that doesn't.

Taylorism was, of course, something that Taylor never believed in. That's no secret, as he spoke against it several times. Most personal "ism"s are like that. (What he actually preached was something very different.)

It's almost completely settled that current form "agile" was created by people that sold books and courses, and had not interest nor any professional experience in making teams work better.

And I guess the list goes on, but I don't remember more. But surprisingly, the guy that invented stack-ranking apparently believed it was really great.