An inflight load applied for 2-3 sec is a transient condition.
Steve, when the plane encounters an updraft on final, the pilot pushes the stick forward to keep from ballooning above glidepath which unloads the airplane. A stall would be more likely if you encountered a downdraft on final, cause the pilot would pull back on the stick, which increases load + angle of attack. When wind shear, updrafts/downdrafts/gusts and turbulence is expected on final, you fly a higher approach speed which gives extra padding for those things.