Do you think that this was a total red herring and nothing to do with his light aircraft experience.....
I certainly do. 'Sticking in a bootful of rudder' is as equally out of place in a light aeroplane as in a fast-jet. Or in any other aeroplane except during deliberate spin entry.
Easy Street, I thought that these days the hierarchy only refers to 'lessons identified' rather than 'lessons learned'?