A steering damper in it’s simplest form is a tube that has a hole in either end. It has a shaft that runs through it. The shaft has a baffle attached to it. The baffle has small holes in it to allow fluid to pass through it as it slides along the inside of the outer tube.
Moving slow, the fluid passes thru fairly easy (allowing you to turn with no resistance) But with fast movement the fluid can’t get thru the holes fast enough to allow the baffle to move at that speed (dampening the movement)
So, If you have a moment of quick movement that could turn into a series of worse movements, the dampening properties of fluid will prevail.