20000 fly hours as you put it, does not preclude someone from being wrong.
"This no dumb no time bloke" ......are you joking?
So this is not your own personal experience.
Which court case had high profile farmers on board? Or did the plane convey high profile farmers?
If they had been of a slightly higher profile then would the turbulence have bothered them?
Tip speed is approaching the speed of sound....so is my Holden, just very slowly, perhaps a deep breath before typing would help you.