The lower the wing loading, the lower the stall speed. A helicopter designer will choose a value of blade loading that defines the speed at which the aircraft will encounter retreating blade stall. The lower the blade loading, the higher this speed will be. This chart indicates that, for reasonable cruise speeds, the helicopter responds less than the airplane. When they are suddenly subjected to additional lift, the blades respond by coning.
Most airplanes get no such relief.
The only exceptions are large jet airplanes, whose wings do have some flexibility. Nervous passengers readily notice this during a takeoff roll or in flight, in turbulent air. For a single sharp-edged gust, the relief is short lived, since the coning will be complete in a fraction of a second. In this case, the rotor actually will act as a vibration absorber. A subscription form will be sent to you automatically.