Ask him this:
Someone should ask him:
"Is there any conceivable air data instrument that you could stick onto an aircraft (or a bird) that would tell you what said aircraft or bird was doing relative to the ground?"
"Is there any conceivable air data instrument that you could stick onto an aircraft (or a bird) that would tell you what the wind was doing?"
It's astounding the difficulty people have with the concept of frames of reference.