Why is this called "self-control" when what it actually tests is giving up one's own agency to an authority? When framed that way it seems less puzzling why it

Why is this called "self-control" when what it actually tests is giving up one's own agency to an authority? When framed that way it seems less puzzling why it might not be healthy. (Just to clarify: the experiment involves the subjects doing something they don't want to do in order to comply with the experimenter)