The point is that it cannot be fixed in post. A male voice I recorded for a test sat at 117 Hz fundamental, and wind rumble occupies the same low band, only without pitch and without pauses. A high-pass steep enough to clear the rumble takes the bottom of the voice with it, so the only real fix happens on location: fur, a bigger blimp, the mic closer to the mouth. Everything after that is damage control, not repair.