Agree in principle, but what about gusts from an angle and also fuselage blanking effects?
F3G,
It would have to be pretty extreme fopr these factors to have a major effect. The vane sits 20% of the chord forward of the leading edge and outside the prop blast. In the Super Cub, it is clamped to the upper pole of the left lift strut, so is very far out.
If it's that gusty, you'll be approaching faster anyway so the proximity to the stall won't be so critical and you'll be ready with a bellyful of power. You wouldn't fly the approach staring at the AoA shifting in gusts in the same way as you wouldn't fly it staring at the ASI fluctuating.
QDM