Sadly I can point to a lot of modellers (but never full-size pilots) who hold it as a God-given truth and will argue vehemently that you steer a plane with rudder, or you steer it on approach to land with rudder, that you pick up a lowered wing with rudder, or that you hold in rudder constantly into wind during any crosswind, and all sorts of other nonsense about the rudder.

Since we are all used to the idea of steering a boat or a car etc simply by yawing, the innocent trainee naturally believes that rudder is a steering control for an aircraft too. Add in a cross wind, and the myths and bad flying become terrible. When those who have really been taught to fly try to explain to them the error of this, the rudderista cult usually get rather heated about it, and cling ever harder to the myths and malpractice and abuse of the rudder.