Dead bug theory

Have you ever watched someone squish a bug under their foot, and then grind it into the floor? Ethical conversation about killing bugs aside, let's just consider that dead is dead. It isn't dead, deader, deadest. In the same way, if a certain amount of left hand pressure stops a string to make a pitch, additional pressure doesn't make it more of a pitch. Additional pressure only makes the hand tighter. There is no advantage to that. And there are lots of disadvantages.