Mike I agree with what you say but would just add that light GA is slightly different in the fact that the PAX are aware of everything going on up front as well as all the bells and whistles.
On a Seneca Five the auto disconnect sets off a buzzer which is way to loud.
I once had a passenger who was alarmed by what she thought was something going wrong on the approach to landing so now I will tell PAX not to worry about the loud buzz.
Even in private jets the PAX are much more involved in what is going on up front and hear audable warnings
"Pull up Pull up, Terrain pull up. Glideslope Glideslope" usually turn the damn thing off
Pace