When driving other types of car, drivers usually turn the steering wheel smoothly. Sudden jerking movements are generally only needed to recover from mistakes.
In F1 the drivers constantly turn the wheel back and forth in corners, rapidly and violently twisting it as they go. That seems like a bad idea, not doing anything to help the car grip the track or reduce tyre wear or reduce lap times.
Why not point the wheel at the right angle and keep it there? The drivers surely know the ideal line, speed and amount of rotation to get through the corner, but seem to need several large adjustments anyway.