Interesting with regards to the booster seat observation/comment in the report.
Being a vertically challenged pilot, I have had to routinely fly with a cushion under my backside or behind my back in some GA aircraft including the Robbie R22. I also required pedal extensions/blocks in the Aero Commander.
I can see some CASA FOIs and AWIs sharpening up their pencils in anticipation of issuing NCNs for non approved seat cushions.